1) Formal:
Refers to an animal that is active during twilight.
2) Slang:
Refers to a human that is active at night.
(See also: Insomnia, nocturnality
1) Fireflies are crepuscular animals.
2) Jimmy's biological father is a crepuscular human.
by VbPeppermint December 16, 2007
of, resembling, or relating to twighlight.
-ZOOLOGY (of an animal) appearing or active in twighlight
The crepuscular realm of the writer's own reveries. (Hawthorne)
by ELCO May 22, 2006
What you call tasty almonds. They can be any type of almonds, as long as they are good.
Dude, those are freakin crepuscular almonds!
by Troy Holleman December 10, 2007