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mainstay

American  
[meyn-stey] / ˈmeɪnˌsteɪ /

noun

  1. Nautical. the stay that secures the mainmast forward.

  2. a person or thing that acts as a chief support or part.

    Coffee is the mainstay of the country's economy.

    Synonyms:
    prop, anchor, bulwark, pillar

mainstay British  
/ ˈmeɪnˌsteɪ /

noun

  1. nautical the forestay that braces the mainmast

  2. a chief support

"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

Etymology

Origin of mainstay

First recorded in 1475–85; main 1 + stay 2

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Manchester City winger Lauren Hemp has been a mainstay in the starting XI and told the Women's Football Weekly podcast "it's really important to have a good connection" with the left-back.

From BBC

But the goal this spring is for him to cement himself as a mainstay in the club’s pitching rotation.

From Los Angeles Times

Buttler, who signed a new two-year central contract last year, has been a mainstay of England's white-ball teams for more than a decade.

From BBC

Charreadas remain a mainstay throughout Mexico and in Mexican American communities north of the border.

From Los Angeles Times

Sheep, and in particular wool, were a mainstay of the Australian economy for much of the past 150 years, feeding into the notion by the 1950s that Australia "rode on the sheep's back".

From Barron's