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English definition of “mast”

mast

noun [C] uk   /mɑːst/ us    /mæst/

mast noun [C] (BOAT)

a tall pole on a boat or ship that supports its sailsPoles, rods, shafts and sticksParts of ships and boats

mast noun [C] (RADIO/TELEVISION)

a tall metal pole used to support an aerial for radio or television signals: a television/radio mastPoles, rods, shafts and sticks

mast noun [C] (FLAG)

a pole that holds a flagPoles, rods, shafts and sticks
(Definition of mast from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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