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mast

1
[ mast, mahst ]
/ mæst, mɑst /
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noun

Nautical.
  1. a spar or structure rising above the hull and upper portions of a ship or boat to hold sails, spars, rigging, booms, signals, etc., at some point on the fore-and-aft line, as a foremast or mainmast.
  2. any of a number of individual spars composing such a structure, as a topmast supported on trestletrees at the head of a lower mast.
  3. any of various portions of a single spar that are beside particular sails, as a top-gallant mast and royal mast formed as a single spar.
Also called pillar. the upright support of a jib crane.
any upright pole, as a support for an aerial, a post in certain cranes, etc.

verb (used with object)

to provide with a mast or masts.

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Idioms for mast

    before the mast, Nautical. as an unlicensed sailor: He served several years before the mast.

Origin of mast

1
before 900; Middle English; Old English mæst; cognate with German Mast; akin to Latin mālus pole

OTHER WORDS FROM mast

mastless, adjectivemastlike, adjectiveun·der·mast·ed, adjective

Definition for mast (2 of 3)

mast2
[ mast, mahst ]
/ mæst, mɑst /

noun

the fruit of the oak and beech or other forest trees, used as food for hogs and other animals.

Origin of mast

2
before 900; Middle English; Old English mæst; cognate with German Mast; akin to meat

Definition for mast (3 of 3)

mast-

variant of masto- before a vowel: mastectomy.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for mast

British Dictionary definitions for mast (1 of 3)

mast1
/ (mɑːst) /

noun

nautical any vertical spar for supporting sails, rigging, flags, etc, above the deck of a vessel or any components of such a composite spar
any sturdy upright pole used as a support
Also called: captain's mast nautical a hearing conducted by the captain of a vessel into minor offences of the crew
before the mast nautical as an apprentice seaman

verb

(tr) nautical to equip with a mast or masts

Derived forms of mast

mastless, adjectivemastlike, adjective

Word Origin for mast

Old English mæst; related to Middle Dutch mast and Latin mālus pole

British Dictionary definitions for mast (2 of 3)

mast2
/ (mɑːst) /

noun

the fruit of forest trees, such as beech, oak, etc, used as food for pigs

Word Origin for mast

Old English mæst; related to Old High German mast food, and perhaps to meat

British Dictionary definitions for mast (3 of 3)

mast-

combining form

a variant of masto-
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for mast

mast-

pref.

Variant ofmasto-
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Idioms and Phrases with mast

mast

see at half-mast.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
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