Available Definitions:
1) prep. - Lower in place, with something directly over or on; under; underneath; hence, at the foot of.
2) prep. - Under, in relation to something that is superior, or that oppresses or burdens.
3) prep. - Lower in rank, dignity, or excellence than; as, brutes are beneath man; man is beneath angels in the scale of beings. Hence: Unworthy of; unbecoming.
4) adv. - In a lower place; underneath.
5) adv. - Below, as opposed to heaven, or to any superior region or position; as, in earth beneath.