from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To make or become cheerful.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To become happier.
- adj. lively; cheerful; in good spirits
from the GNU version of the Collaborative International Dictionary of English
- intransitive v. To shriek; to gnash; to utter harsh or shrill cries.
- intransitive v. To chirp like a bird.
- transitive v. To cheer; to enliven.
- adj. Lively; cheerful; in good spirits.
from The Century Dictionary and Cyclopedia
- To creak; shriek; groan.
- To make a noise, as a bird; chirp.
- Also spelled cherk.
- To be or become cheerful.
- Lively; cheerful; pert; in good spirits.
- n. A perverted form of chert.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. make a shrill creaking, squeaking, or noise, as of a door, mouse, or bird
Middle English chirken, to chirp, chirrup, from Old English cearcian, to chatter, alteration of cracian, to resound; see crack.(American Heritage® Dictionary of the English Language, Fourth Edition)