chiffchaffPronunciation: /ˈtʃɪftʃaf/Definition of chiffchaff noun a small Eurasian and North African migratory leaf warbler with drab plumage. Genus Phylloscopus, family Sylviidae: two species Origin:late 18th century: imitative of its callchiffchaff in other Oxford dictionaries Definition of chiffchaff in the US English dictionary