swiftlet means any of the 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.
Among words judged in Lexicurio's Arena, swiftlet ranks #10,459 of 42,747 for Qualifying.
Etymology
From swift + -let.
noun
- Any of the 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.
Definitions & examples from Wiktionary (CC BY-SA 3.0).