Cher"up (?), v. i. [Prob. fr. chirp.] To make a short, shrill, cheerful sound; to chirp. See Chirrup. "Cheruping birds." Drayton.

Cher"up, v. t. To excite or urge on by making a short, shrill, cheerful sound; to cherup to. See Chirrup.

He cherups brisk ear-erecting steed.
Cowper.

Cher"up, n. A short, sharp, cheerful noise; a chirp; a chirrup; as, the cherup of a cricket.