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noun

mole

mohl
noun
1
A small, raised, often dark spot on the skin.
"The doctor checked an unusual mole on his back."
2
A small burrowing mammal with tiny eyes and large digging paws.
"Moles had left small mounds of dirt across the lawn."
3
A spy who has secretly infiltrated an organization to pass on its secrets.
"Investigators suspected there was a mole inside the agency."
4
(chemistry) The standard unit for measuring an amount of a substance.
"One mole of carbon-12 weighs exactly 12 grams."

How to Use Mole

Learner’s notes

In plain EnglishMost commonly a skin blemish or the small burrowing animal; also used for a secret infiltrator, and, in chemistry, a unit of quantity.

Common pairings
mole on the skin double agent mole a mole in the organization

Word Forms

moled past tense, moles plural, moles plural, moles plural, moles plural, moles plural, moles plural, moles plural, moles singular

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The doctor checked an unusual _____ on his back.

Etymology

The skin-spot and animal senses trace back to Old English mal, meaning "spot" or "blemish." The chemistry unit comes from a shortening of "molecule."

Rhymes for mole

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