avocet Syllabification: (av·o·cet)Pronunciation: /ˈavəˌset/Definition of avocet noun a long-legged wading bird with a slender upturned bill and strikingly patterned plumage. Genus Recurvirostra, family Recurvirostridae: four species, including the American avocet (R. americana), which has black and white plumage Origin: late 17th century: from French avocette, from Italian avosettaavocet in other Oxford dictionaries Definition of avocet in the British & World English dictionary