mast
noun [ C ] uk/mɑːst/ us/mæst/
(BOAT)
船桅，桅杆
a tall pole on a boat or ship that supports its sails
(RADIO/TELEVISION)
天线杆
a tall metal pole used to support an aerial for radio, television, or mobile phonesignals
a television/radio mast 电视／广播天线杆
(FLAG)
旗杆
a pole that holds a flag
See also: half-mast