Available Definitions:
1) - A prefix, originally the same word as by;
2) - To intensify the meaning; as, bespatter, bestir.
3) - To render an intransitive verb transitive; as, befall (to fall upon); bespeak (to speak for).
4) - To make the action of a verb particular or definite; as, beget (to get as offspring); beset (to set around).