mound1 / mound/ • n. a rounded mass projecting above a surface. ∎ a raised mass of earth, stones, or other compacted material, sometimes created artificially for purposes of defense or burial. ∎ a small hill. ∎ (a mound of/mounds of) a large pile or quantity of something: burying potential problems under mounds of cash. ∎ Baseball (in full pitcher’s mound) the elevated area from which the pitcher delivers the ball.• v. [tr.] heap up into a rounded pile: mound the pie filling slightly in the center. ∎ archaic enclose, bound, or fortify with an embankment: hills that mound the sea.PHRASES: take the mound Baseball (of a pitcher) have a turn at pitching: Morris will take the mound Tuesday.mound2 • n. archaic a ball representing the earth, used as part of royal regalia, e.g., on top of a crown, typically of gold and surmounted by a cross.