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mast
1[mast, mahst]
noun
Nautical.
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.
any of a number of individual spars composing such a structure, as a topmast supported on trestletrees at the head of a lower mast.
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.
mast
2[mast, mahst]
noun
the fruit of the oak and beech or other forest trees, used as food for hogs and other animals.
mast-
3variant of masto- before a vowel.
mastectomy.
mast
1/ ɑː /
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
nautical as an apprentice seaman
verb
(tr) nautical to equip with a mast or masts
mast
2/ ɑː /
noun
the fruit of forest trees, such as beech, oak, etc, used as food for pigs
mast-
3combining form
a variant of masto-
Other Word Forms
- mastless adjective
- mastlike adjective
- undermasted adjective
- ˈٱ adjective
- ˈˌ adjective
Word History and Origins
Origin of mast1
Word History and Origins
Origin of mast1
Origin of mast2
Idioms and Phrases
before the mast, as an unlicensed sailor.
He served several years before the mast.
Example Sentences
All three masts collapsed and video footage taken by bystanders shows some of the crew members dangling from the yards and sails.
Video showed the ship's three tall masts crumbling as horrified onlookers watched from the shore.
Bicester Town Council said the flags at Garth House were flying at half mast "as an expression of our sorrow and respect for those who lost their lives".
Footage has emerged showing towering masts of the Cuauhtémoc clipping the bridge as the sailing vessel was passing under the famous structure on Saturday evening.
On stage, he performs in a ramshackle sailing boat, clinging to the mast as the ocean threatens to consume him.
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Related Words
When To Use
Mast- is a combining form used like a prefix meaning “breast.” It is often used in medical terms, especially in anatomy and pathology.Mast- comes from the Greek ó, meaning “breast.” The Latin-based analog to masto- is mammo-, from mamma, meaning “breast.”Mast- is a variant of masto-, which loses its -o- when combined with words or word elements beginning with vowels.Want to know more? Read our Words That Use masto- article.
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from 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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