Definition of: whence

(hwens) adverb
1. Interrogatively, from what place or source; of what origin: Whence and what art thou? Whence is the correlative of thence.
2. Conjunctively: a From what or which place, source, or cause; from which: the place whence these sounds arise. b To which place; where: Return whence you came. c For which reason; wherefore. [ME whannes, whennes, adverbial genitive of whanne, OE hwanne when]