leaf warbler
noun
1- a small, slender Old World songbird with a brown or greenish back and whitish or yellowish underparts柳莺。
1.1
- Genus Phylloscopus, family Sylviidae: many species, including the chiffchaff and willow warbler.柳莺属, 莺科：多种, 包括叽喳柳莺和欧柳莺。