Definitions

1. adverb

from which place or source; in which place or region

“I’ve lost my keys, and I can’t remember wherefrom I last used them.”

2. noun

the place or source from which something comes or is obtained

“The new restaurant’s menu is quite interesting, considering wherefrom they source their ingredients.”

3. adverb (archaic or poetic)

from which place or source; in which place or region

“In days of old, the wise men pondered wherefrom the stars came to life.”