Dictionary.com
Thesaurus.com

mainmast

American  
[meyn-mast, -mahst, meyn-muhst] / ˈmeɪnˌmæst, -ˌmɑst, ˈmeɪn məst /

noun

Nautical.
  1. the second mast from forward in any ship having two or more masts, mast, except for a yawl, ketch, or dandy.

  2. the larger forward mast of a yawl, ketch, or dandy.

  3. the sole mast of any of various ships, as sloops or cutters.


mainmast British  
/ ˈmeɪnˌmɑːst /

noun

  1. nautical the chief mast of a sailing vessel with two or more masts, being the foremast of a yawl, ketch, or dandy and the second mast from the bow of most others

"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 mainmast

First recorded in 1475–85; main 1 + mast 1

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.

Everything was on fire from the mainmast forward, he said.

From Seattle Times

"Removing the lower mainmast has been an incredibly complex project," he said.

From BBC

Minutes later, the English ship — the Fancy, under the command of the notorious pirate captain Henry Every — had closed on the Mughal vessel and shattered its 40-foot mainmast with a single, fluke cannon shot.

From New York Times

As we neared the mouth of New Bedford Harbor, a schooner flying a long green streamer off its mainmast, its sails plump, its bow rising and dipping, came out through the channel toward us.

From Literature

I know what he’s going to do even before he begins climbing the mainmast.

From Literature