mole

1. (slang, derogatory, chiefly Australia and New Zealand) A moll, a bitch, a slut.Synonyms: mollAustraliaNew-Zealandderogatoryslang

1. (nautical) A massive structure, usually of stone, used as a pier, breakwater or junction between places separated by water.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 [...]"; "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."; "Using the countless tons of rock from the cliff-face, supplemented by much more from inland, they threw out a huge breakwater, 2,000 ft. long and 80 ft. high, roughly at right angles to the quay, so forming an almost completely sheltered corner. Fifty years later, this massive mole is still standing up to the worst that the Irish Sea can do."

2. (rare) A haven or harbour, protected with such a breakwater.rare

3. (historical) An Ancient Roman mausoleum.historical

1. (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. [from 1897]