1. The principal sail in a ship.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• nainsail,
• kainsail,
• jainsail,
• mzinsail,
• msinsail,
• mwinsail,
• mqinsail,
• maunsail,
• majnsail,
• maknsail,
• maonsail,
• ma9nsail,
• ma8nsail,
• maibsail,
• maimsail,
• maijsail,
• maihsail,
• mainaail,
• mainzail,
• mainxail

• mangle,
• Mangual,
• Mansell,
• mancilla,
• mangold,
• mangels,
• Mancillas,
• Mancil,
• manacle,
• mangled,
• man-child,
• mangler,
• mangel,
• maniscalco,
• mangily.

The adjective form of the word "mainsail" is "mainsail". It does not change in form when used as an adjective.

The plural of the "mainsail" can be the "mainsails".

The singular of the "mainsail" can be the "mainsail".