| Noun | 1. | nighthawk - a person who likes to be active late at nightindividualist - a person who pursues independent thought or action |
| 2. | nighthawk - 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 Chordeiles, genus Chordeiles - a genus of Caprimulgidae |