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Webster 1913 Edition

Noun.

A little hillock of earth thrown up by moles working under ground; hence, a very small hill, or an insignificant obstacle or difficulty;

as, to make a mountain out of a

molehill

Having leapt over such mountains, lie down before a

molehill

South.

molehills in a field

molehill ‎(plural molehills)

A small mound of earth created by a mole's burrowing underneath the surface of the ground.

A small mound of earth