Definitions for: Mainsheet

[n] a line (rope or chain) that regulates the angle at which a sail is set in relation to the wind

Webster (1913) Definition: Main"sheet`, n. (Naut.)
One of the ropes by which the mainsail is hauled aft and
trimmed.

Synonyms: sheet, shroud, tack, weather sheet

See Also: futtock shroud, line, ship