Found 2 items, similar to mainsail.
English → English (WordNet) Definition: mainsail mainsail n : the lowermost sail on the mainmast
English → English (gcide) Definition: Mainsail Mainsail \Main"sail`\ (m[=a]n"s[=a]l`), n. (Naut.) The principal sail in a ship or other vessel. [1913 Webster] [They] hoised up the mainsail to the wind. -- Acts xxvii. 40. [1913 Webster] Note: The mainsail of a ship is extended upon a yard attached to the mainmast, and that of a sloop or schooner upon the boom. [1913 Webster]