noun.
One who sings; one who makes music with the voice; specifically, a trained or professional vocalist.
noun.
In the early church and in the Greek Church, a member of one of the minor orders of clergy; one who is ordained to sing in the church.
noun.
One who composes or rehearses anything in verse.
noun.
A bird that sings; a bird that naturally sings well, or can be trained to sing tunes; a singing bird: as, the male mocking-bird is a singer, but the female is not; the canary is a good singer.
noun.
One who or that which singes.