nighthawk

noun

Etymology: From night + hawk.

1. A nightjar, especially Caprimulgus europaeus (Eurasian nightjar).
2. A New World nightjar of the genus Chordeiles, especially Chordeiles minor.

   “The swallows circled around and I watched them and the night-hawks flying above the roofs and drank the Cinzano.”

3. A person whose preference or custom is to remain awake and active during the night and the early morning hours.
4. A nighthawker (metal detectorist who works illegally at night).
5. An unlicensed prostitute who worked the roadsides at night.