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English definition of “mole”

mole

noun [C] uk   /məʊl/ us    /moʊl/

mole noun [C] (ANIMAL)

a small mammal that is almost blind, has dark fur, and lives in passages that it digs underground

mole noun [C] (SPOT)

a small, dark spot or lump (= raised area) on a person's skin
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mole noun [C] (PERSON)

a person who works for an organization or government and secretly gives information to its competitor or enemy: A mole inside the Department of Transport had leaked secret proposals to the press.
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(Definition of mole from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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