a long-tailed iguanid lizard, Dipsosaurus dorsalis, of arid areas in the southwestern U.S. and northwestern Mexico, having a row of enlarged scales down the back.
noun 1. . noun 1. any of several birds of the family Hemiprocnidae, of southeast Asia and the East Indies, related to the true swifts but differing in having erectile crests and the habit of perching in trees.
- Crested tit
noun 1. a small European songbird, Parus cristatus, that has a greyish-brown plumage with a prominent speckled black-and-white crest: family Paridae (tits)
noun 1. a forage grass, Agropyron cristatum, native to Eurasia and grown in the Great Plains as pasturage, hay, and for erosion control.
[krest-faw-luh n] /ˈkrɛstˌfɔ lən/ adjective 1. dejected; dispirited; discouraged. 2. having a drooping or head. /ˈkrɛstˌfɔːlən/ adjective 1. dejected, depressed, or disheartened adj. 1580s, past participle adjective, but the verb crestfall is recorded only from 1610s, in reference to diseased horses, and is rare. It’s possible that the image behind this use of the word […]