1 a large pile of earth or stones; a small hill:
a Bronze Age burial mound * The castle was built on top of a natural grassy mound.
2 a pile:
a small mound of rice / sand
3 ~ of sth (informal) a large amount of sth:
I've got a mound of paperwork to do.
4 (in baseball) the small hill where the player who throws the ball (called the PITCHER) stands
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