To fasten; to attach. In the solemn or grave style, this word now appears ludicrous; as, to get a commendam tacked to their sees. --And tack the center to the sphere.

To unite by stitching together; as, to tack together the sheets of a book; to tack one piece of cloth to another.

To fasten slightly by nails; as, to tack on a board or shingle.

A spot.

A small nail.

A rope used to confine the foremost lower corners of the courses and stay-sails, when the wind crosses the ship’s course obliquely; also, a rope employed to pull the lower corner of a studding sail to the boom. Hence,

The part of a sail to which the tack is usually fastened; the foremost lower corner of the courses. Hence,

The course of a ship in regard to the position of her sails; as the starboard tack, or larboard tack; the former when she is close- hauled with the wind on her starboard, the latter when close hauled with the wind on her larboard. To hold tack, to last or hold out. Tack of a flag, a line spliced into the eye at the bottom of the tabling, for securing the flag to the halliards.

To change the course of a ship by shifting the tacks and position of the sails from one side to the other.

In rural economy, a shelf on which cheese is dried. Tack of land, the term of a lease.