Dictionary and translator for handheld
New : sensagent is now available on your handheld
A windows (pop-into) of information (full-content of Sensagent) triggered by double-clicking any word on your webpage. Give contextual explanation and translation from your sites !
With a SensagentBox, visitors to your site can access reliable information on over 5 million pages provided by Sensagent.com. Choose the design that fits your site.
Improve your site content
Add new content to your site from Sensagent by XML.
Crawl products or adds
Get XML access to reach the best products.
Index images and define metadata
Get XML access to fix the meaning of your metadata.
Please, email us to describe your idea.
Lettris is a curious tetris-clone game where all the bricks have the same square shape but different content. Each square carries a letter. To make squares disappear and save space for other squares you have to assemble English words (left, right, up, down) from the falling squares.
Boggle gives you 3 minutes to find as many words (3 letters or more) as you can in a grid of 16 letters. You can also try the grid of 16 letters. Letters must be adjacent and longer words score better. See if you can get into the grid Hall of Fame !
Change the target language to find translations.
Tips: browse the semantic fields (see From ideas to words) in two languages to learn more.
1.moving very fast"fleet of foot" "the fleet scurrying of squirrels" "a swift current" "swift flight of an arrow" "a swift runner"
1.common western lizard; seen on logs or rocks
2.a small bird that resembles a swallow and is noted for its rapid flight
1.an English satirist born in Ireland (1667-1745)
2.United States meat-packer who began the use of refrigerated railroad cars (1839-1903)
SwiftSwift (swĭft), a. [Compar. Swifter (swĭft"ẽr); superl. Swiftest.] [AS. swift; akin to swāpan to sweep, swipu a whip; cf. swīfan to move quickly, to revolve. See Swoop, v. i., and cf. Swivel, Squib.]
1. Moving a great distance in a short time; moving with celerity or velocity; fleet; rapid; quick; speedy; prompt.
My beloved brethren, let every man be swift to hear, slow to speak, slow to wrath. James i. 19.
Swift of dispatch and easy of access. Dryden.
And bring upon themselves swift destruction. 2 Pet. ii. 1.
2. Of short continuance; passing away quickly. Shak.
☞ Swift is often used in the formation of compounds which are generally self-explaining; as, swift-darting, swift-footed, swift-winged, etc.
Syn. -- Quick; fleet; speedy; rapid; expeditious.
SwiftSwift, adv. Swiftly. [Obs. or Poetic] Shak.
Ply swift and strong the oar. Southey.
1. The current of a stream. [R.] Walton.
2. (Zoöl.) Any one of numerous species of small, long-winged, insectivorous birds of the family Micropodidæ. In form and habits the swifts resemble swallows, but they are destitute of complex vocal muscles and are not singing birds, but belong to a widely different group allied to the humming birds.
☞ The common European swift (Cypselus apus syn. Micropus apus) nests in church steeples and under the tiles of roofs, and is noted for its rapid flight and shrill screams. It is called also black martin, black swift, hawk swallow, devil bird, swingdevil, screech martin, and shriek owl. The common American, or chimney, swift (Chætura pelagica) has sharp rigid tips to the tail feathers. It attaches its nest to the inner walls of chimneys, and is called also chimney swallow. The Australian swift (Chætura caudacuta) also has sharp naked tips to the tail quills. The European Alpine swift (Cypselus melba) is whitish beneath, with a white band across the breast. The common Indian swift is Cypselus affinis. See also Palm swift, under Palm, and Tree swift, under Tree.
3. (Zoöl.) Any one of several species of lizards, as the pine lizard.
4. (Zoöl.) The ghost moth. See under Ghost.
5. [Cf. Swivel.] A reel, or turning instrument, for winding yarn, thread, etc.; -- used chiefly in the plural.
6. The main card cylinder of a flax-carding machine.
blackguard, guy, jeer, jest at, josh, kid, laugh at, make fun, make fun of, mock, poke fun, poke fun at, pull s.o.'s leg, rib, ridicule, roast, scoff at, sneer at, take the mickey out of - caustic remark, irony, lampoon, sarcasm, satire[Dérivé]
meat packer, packer[Hyper.]
se dit de qqch (fr)[Classe...]
(hasten; fly; make haste; hurry; hurry up; scurry; scamper; skitter; scuttle; buck up; jump to it; get a move on), (quickness; swiftness), (immediacy), (rush; haste; hastiness; hurry; hurriedness; precipitation; dispatch; abruptness; precipitateness; precipitance; precipitancy; suddenness; precipitousness)[Thème]
oiseau volant (fr)[ClasseParExt.]
Ordre des Apodiformes (fr)[ClasseTaxo.]
Ordre des Apodiformes (fr)[ClasseTaxo.]
|Common Swift, Apus apus
Note wing shape different from swallows
Nearly 20, see text.
The swifts are a family, Apodidae, of highly aerial birds. They are superficially similar to swallows, but are actually not closely related to passerine species at all; swifts are in the separate order Apodiformes, which they share with hummingbirds. The treeswifts are closely related to the true swifts, but form a separate family, the Hemiprocnidae.
The family scientific name comes from the Ancient Greek απους, apous, meaning "without feet", since swifts have very short legs and never settle voluntarily on the ground, clinging instead to vertical surfaces. The tradition of depicting swifts without feet continued into the Middle Ages, as seen in the heraldic martlet.
Swifts are the most aerial of birds. Larger species are amongst the fastest fliers in the animal kingdom, with the White-throated Needletail having been reported flying at up to 169 km/h. Even the Common Swift cruises at 5 to 14 metres per second (18–50 km/h, 11–31 mph). In a single year the common swift can cover at least 200,000 km.
The swiftlets or cave swiftlets have developed a form of echolocation for navigating through dark cave systems where they roost. One species, Aerodramus papuensis, has recently been discovered to use this navigation at night outside its cave roost also.
Swifts occur on all the continents, though not in the far north or large deserts, and on many oceanic islands. Like swallows and martins, the swifts of temperate regions are strongly migratory and winter in the tropics. Some species can survive short periods of cold weather by entering torpor, a state similar to hibernation.
Many have a characteristic shape, with a short forked tail and very long swept-back wings that resemble a crescent or a boomerang. The flight of some species is characterised by a distinctive "flicking" action quite different from swallows. Swifts range in size from the Pygmy Swiftlet (Collocalia troglodytes), which weighs 5.4 g and measures 9 cm (3.7 inches) long, to the Purple Needletail (Hirundapus celebensis), which weighs 184 g (6.5 oz) and measures 25 cm (10 inches) long.
The nest of many species is glued to a vertical surface with saliva, and the genus Aerodramus use only that substance, which is the basis for bird's nest soup. The eggs hatch after 19 to 23 days, and the young leave the nest after a further six to eight weeks. Both parents assist in raising the young.
Swifts and treeswifts have long been considered to be relatives of the hummingbirds, a judgement corroborated by the discovery of the Jungornithidae, which were apparently swift-like hummingbird relatives, and of primitive hummingbirds such as Eurotrochilus. Traditional taxonomies place the hummingbird family (Trochilidae) in the same order as the swifts and treeswifts (and no other birds); the Sibley-Ahlquist taxonomy treated this group as a superorder in which the swift order was called Trochiliformes.
The taxonomy of the swifts is in general complicated, with genus and species boundaries widely disputed, especially amongst the swiftlets. Analysis of behavior and vocalizations is complicated by common parallel evolution, while analyses of different morphological traits and of various DNA sequences have yielded equivocal and partly contradictory results (Thomassen et al., 2005).
The Apodiformes diversified during the Eocene, at the end of which the extant families were present; fossil genera are known from all over temperate Europe, between today's Denmark and France, such as the primitive Scaniacypselus (Early - Middle Eocene) and the more modern Procypseloides (Late Eocene/Early Oligocene - Early Miocene). A prehistoric genus sometimes assigned to the swifts, Primapus (Early Eocene of England), might also be a more distant ancestor.
Tribe Collocaliini - swiftlets
Tribe Chaeturini - needletails
Tribe Apodini - typical swifts
|Wikimedia Commons has media related to: Apodidae|