a natural elevation of earth; a hillock or knoll.

an artificial elevation of earth, as for a defense work or a dam or barrier; an embankment.

a heap or raised mass

a mound of papers; a mound of hay.

Baseball . the slightly raised ground from which the pitcher delivers the ball. Compare rubber ( def. 13 ) .

an elevation formed of earth, sand, stones, etc., esp. over a grave or ruins.

a tumulus or other raised work of earth dating from a prehistoric or long-past period.

to form into a mound; heap up.

to furnish with a mound of earth, as for a defense.

noun

depression , ditch , valley

noun

anthill , bank , drift , dune , embankment , hillock , knoll , mass , molehill , mountain , pile , rise , shock , stack , tumulus , agglomeration , cumulus , hill , mess , tumble , barrow , bulwark , butt , cairn , elevation , heap , hummock , hump , mogul , motte , tuffet

verb

bank , drift , hill , lump , pile , stack