Swiftlet definition
Any of various tropical and subtropical birds of the four genera Aerodramus, Hydrochous, Schoutedenapus, and Collocalia in the swift family, many of which can navigate in darkness using echolocation.
noun
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Other Word Forms
Noun
Singular:
swiftlet
Plural:
swiftletsOrigin of swiftlet
- swift + -let
From Wiktionary