Answer :
There are two defintions of Crepusclar:
1. Something that resembles or relates to twighlight.
2. An animal active or is appearing in twilight.
Definition:
1. of, resembling, or relating to twilight.
Zoology
2. (of an animal) appearing or active at night.
Synonyms:
stygian, tenebrific, tenebrous, unlit.
Example sentences:
1. The dim crepuscular light of the crepuscular sky.
2. Many familiar mammal species are crepuscular, including some bats, hamsters, housecats, stray dogs, rabbits, ferrets, and rats.