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[From its roaring sound in flight.]
(Animals) another name for nighthawk1
any of several long-winged New World goatsuckers of the subfamily Chordeilinae, esp. Chordeiles minor, often nesting on flat rooftops in urban areas.
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|Noun||1.||bullbat - mainly nocturnal North American goatsucker|
caprimulgid, goatsucker, nightjar - mainly crepuscular or nocturnal nonpasserine birds with mottled greyish-brown plumage and large eyes; feed on insects