Quail v. i. : To die; to perish; hence, to wither; to fade.

Quail v. i. : To become quelled; to become cast down; to sink under trial or apprehension of danger; to lose the spirit and power of resistance; to lose heart; to give way; to shrink; to cower.

Quail v. t. : To cause to fail in spirit or power; to quell; to crush; to subdue.

Quail v. i. : To curdle; to coagulate, as milk.

Quail n. : Any gallinaceous bird belonging to Coturnix and several allied genera of the Old World, especially the common European quail (C. communis), the rain quail (C. Coromandelica) of India, the stubble quail (C. pectoralis), and the Australian swamp quail (Synoicus australis).

Quail n. : Any one of several American partridges belonging to Colinus, Callipepla, and allied genera, especially the bobwhite (called Virginia quail, and Maryland quail), and the California quail (Calipepla Californica).

Quail n. : Any one of numerous species of Turnix and allied genera, native of the Old World, as the Australian painted quail (Turnix varius). See Turnix.

Quail n. : A prostitute; -- so called because the quail was thought to be a very amorous bird.

Example:
What good does feeding Quail to a snake do?

Taxonomy
Quail, Common Quail, free encyclopedia, Search, Behaviour, Genus Coturnix, family Phasianidae, species, Brown Quail, Blue Quail, Asian Blue Quail, Coturnix coturnix, Japanese Quail, Coturnix japonica, nest, the Japanese, Quail eggs, Animal Diversity Web.

Defination from the web:
Quail (disambiguation). Quail is a collective name for several genera of mid-sized birds in the pheasant family Phasianidae. New World quails (family Odontophoridae) and buttonquails (family Turnicidae) are not closely related but named for their similar appearance and ...