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plural moles
A naevus, a pigmented, slightly raised, and sometimes hairy spot on the skin. examples
Any of several small, burrowing insectivores of the family Talpidae; also any of southern African mammals in the family Chrysochloridae (golden moles) and any of several Australian mammals in the family Notoryctidae (marsupial moles), similar to but not closely related to Talpidae moles examples
Any of the burrowing rodents also called mole-rats. examples
(espionage) An internal spy, a person who involves himself or herself with an enemy organisation, especially an intelligence or governmental organisation, to determine and betray its secrets from within. examples
A kind of self-propelled excavator used to form underground drains, or to clear underground pipelines examples
A type of underground drain used in farm fields, in which a mole plow creates an unlined channel through clay subsoil. examples
(slang, derogatory) A moll, a bitch, a slut.
(nautical) A massive structure, usually of stone, used as a pier, breakwater or junction between places separated by water. quotations examples
[Alexander the Great] then conceived the stupendous idea of constructing a mole, which should at once connect [Tyre] with the main land; and this was actually accomplished by driving piles and pouring in incalculable quantities of soil and fragments of rock; and it is generally believed, partly on the authority of ancient authors, that the whole ruins of Old Tyre were absorbed in this vast enterprize, and buried in the depths of the sea [...]
1847, George A. Fisk, A pastor's memorial of the holy land
Its extreme downtown is the battery, where that noble mole is washed by waves, and cooled by breezes, which a few hours previous were out of sight of land.
1851, Herman Melville, Moby Dick, Chapter 1
[about Saint-Tropez] Yachts and fishing boats fill the little square of water, which is surrounded on two sides by quays, on the third by a small ship-repairing yard and on the fourth by the mole where the fishing boats moor and the nets are spread out to dry.
1983, Archibald Lyall, Arthur Norman Brangham, The companion guide to the south of France
(rare) A haven or harbour, protected with such a breakwater.
(historical) An Ancient Roman mausoleum.
(chemistry, physics) In the International System of Units, the base unit of amount of substance; the amount of substance of a system which contains exactly 6.02214076×1023 elementary entities (atoms, ions, molecules, etc.). Symbol: mol. The number of atoms is known as Avogadro’s number. examples
A hemorrhagic mass of tissue in the uterus caused by a dead ovum. examples
countable and uncountable, plural moles
One of several spicy sauces typical of the cuisine of Mexico and neighboring Central America, especially a sauce which contains chocolate and which is used in cooking main dishes, not desserts. examples