from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A small European warbler (Phylloscopus collybita) with yellowish-green plumage.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A small, common warbler, Phylloscopus collybita, with yellowish-green plumage that breeds throughout northern and temperate Europe and Asia.
- n. Any of several other species of the same genus.
- n. the song of the chiffchaff.
Imitative of its song.(American Heritage® Dictionary of the English Language, Fourth Edition)
Echoic of its repetitive "chiff-chaff" song of the European species Phylloscopus collybita. (Wiktionary)