From WordNet (r) 3.0 (2006):
mound
n 1: (baseball) the slight elevation on which the pitcher stands
[syn: mound, hill, pitcher's mound]
2: a small natural hill [syn: knoll, mound, hillock,
hummock, hammock]
3: a collection of objects laid on top of each other [syn:
pile, heap, mound, agglomerate, cumulation,
cumulus]
4: structure consisting of an artificial heap or bank usually of
earth or stones; "they built small mounds to hide behind"
[syn: mound, hill]
5: the position on a baseball team of the player who throws the
ball for a batter to try to hit; "he has played every
position except pitcher"; "they have a southpaw on the mound"
[syn: pitcher, mound]
v 1: form into a rounded elevation; "mound earth"