1
: a long pole or spar rising from the keel or deck of a ship and supporting the yards, booms, and rigging
2
: a slender vertical or nearly vertical structure (such as an upright post in various cranes)
3
: a disciplinary proceeding at which the commanding officer of a naval unit hears and disposes of cases against enlisted men
called also captain's mast
see also:
: fruits, seeds, or nuts (such as berries, pine seeds, or acorns) of trees or shrubs that serve as food for wild or domestic animals and typically accumulate on the ground
Cite this Entry
“Mast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mast. Accessed 7 Jul. 2026.
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