prep., adv., & n.
prep. 1 at or to the further side of (beyond the river). 2 outside the scope, range, or understanding of (beyond repair; beyond a joke; it is beyond me). 3 more than.
adv. 1 at or to the further side. 2 further on.
n. (prec. by the) the unknown after death. the back of beyond see BACK.
[ OE beg(e)ondan (as BY, YON, YONDER) ]