/ maʊnd; NAmE / noun
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
SYN heap :
a small mound of rice / sand
3.
mound of sth ( informal ) a large amount of sth
SYN heap :
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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WORD ORIGIN
early 16th cent. (as a verb in the sense enclose with a fence or hedge ): of obscure origin. An early sense of the noun was boundary hedge or fence .