Word Origin & History
mast (1)
"long pole on a ship to support the sail," O.E. mæst, from P.Gmc. *mastaz (cf. O.N. mastr, Du., Ger. mast), from PIE *mazdos "a pole, rod" (cf. L. malus "mast," O.Ir. matan "club," Ir. maide "a stick," O.C.S. mostu "bridge"). Masthead is from 1748 as "top of a ship's mast" (the place for the display of flags), hence, from 1838, "top of a newspaper." The single mast of an old ship was the boundary between quarters of officers and crew, hence before the mast in the title of Dana's book, etc.