A person who likes to be active late at night; SYN. nighthawk, nightbird.
Fêtard.
ETYM Latin nocturnalis, nocturnus, from nox, noctis, night. Related to Night, Nocturn.
1. Of or relating to or occurring in the night.
2. Of or during or relating to the night.
3. (Biology) Belonging to or active during the night.