あさぼらけ

Etymology
Compound of.

Speculating on the nature of the second element borake, there is a distant possibility that this might be from, in reference to the myth of the sun goddess Amaterasu shutting herself into a cave, and the reopening of that cave representing a dawn of sorts. See also.

Noun

 * 1)  dawn

Synonyms

 * See Thesaurus:明け方