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mainsail

American  
[meyn-seyl, meyn-suhl] / ˈmeɪnˌseɪl, ˈmeɪn səl /

noun

Nautical.
  1. the lowermost sail on a mainmast.


mainsail British  
/ ˈmeɪnsəl, ˈmeɪnˌseɪl /

noun

  1. nautical the largest and lowermost sail on the mainmast

"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 mainsail

late Middle English word dating back to 1425–75; see origin at main 1, sail

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.

See Examples For:

If New Zealander Dean Barker doesn’t return, Paul Goodison of Britain, the mainsail trimmer in 2021, could take the helm.

From Seattle Times Jan. 7, 2022

They have built four stationary cycling stations into each hull to tap leg power instead of traditional arm power from the grinders to power the hydraulic systems that control the wing mainsail and the daggerboards.

From New York Times Jun. 18, 2017

They’ve built four stationary cycling stations into each hull to tap leg power instead of traditional arm power from the grinders to power the hydraulic systems that control the wing mainsail and the daggerboards.

From The Guardian Jun. 18, 2017

“We’re in a good space and everybody definitely remembers that,” said Ashby, who trims the giant wing mainsail.

From Washington Times May 24, 2017

We climb high enough to reach the mainsail.

From "Challenger Deep" by Neal Shusterman

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