quail

1. To waste away; to fade, to wither
2. To daunt or frighten (someone)
3. To lose heart or courage; to be daunted or fearful.
4. Of courage, faith, etc.: to slacken, to give way.

1. Any of various small game birds of the genera Coturnix, Anurophasis or Perdicula in the Old World family Phasianidae or of the New World family Odontophoridae.
2. The meat from this bird eaten as food.
3. A prostitute, so called because the quail was thought to be a very amorous bird.

verb

To curdle or coagulate, as milk does.