a bird that sings; a songster. Usually applied to cage-birds; the plural is also sometimes used as a rendering of oscines, n. 2.

Originally: a bird that sings; a bird with a melodious song; (also) a cage bird kept for its singing (now rare). In later use also (Ornithology): a…

A bird that whistles.

Of songbirds. (More frequently songster.)

A songbird, spec. one with a particularly melodious song.

A female songbird.

poetic. A singing bird or (occasionally) other animal. Now rare.

A bird or animal which squeaks. Ornithology. One or other of various birds characterized by their squeaking call.

A bird, esp. one with a call characterized by repeated light tremulous sounds. Cf. twitter, v.1 1a.

a bird or (occasionally) an insect that sings at night.

= songbird, n. 1.