English
jiggermast
From jigger + mast.
Proto-Indo-European *mazdos ‘pole, mast’
Proto-Germanic *mastaz ‘mast, sail-pole’
Proto-West Germanic *mast
Old English mæst
Middle English mast
English mast
Today it means
noun The fourth-tallest mast on a ship with more than three masts; particularly a full-rigged ship.
Language periods are conventional ranges, not dates for this word.
Etymograph / jiggermast