(v. t.) The direction of a vessel in regard to the trim of her sails; as, the starboard tack, or port tack; -- the former when she is closehauled with the wind on her starboard side; hence, the run of a vessel on one tack; also, a change of direction.
TACK
Meaning of TACK in English
Webster's English dictionary. Английский словарь Webster. 2012