- ☆ any of various nightjars that feed on flying insects, esp., the common nighthawk (Chordeiles minor), which is active during the day or night
- ☆ night owl (sense )
See nighthawk in American Heritage Dictionary 4
a. Any of several chiefly nocturnal birds of the genus Chordeiles, especially C. minor, having mottled grayish-brown feathers with a white spot on the wings. Also called bullbat, mosquito hawk.
b. The European nightjar.
- Informal A night owl.
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