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

of, resembling, or relating to twighlight.
-ZOOLOGY (of an animal) appearing or active in twighlight

it's basically just an alternative to awesome

What you call tasty almonds. They can be any type of almonds, as long as they are good.