TACK, Scotch law. A contract of location by which the use of land, or any other immovable subject, is, set to the lessee or tacksman for a certain yearly rent, either in money, the fruits of tho ground, or services. Ersk. Prin. Laws of Scot. B. 2, t. 6, n. 8; 1 Tho. Co. Litt. 209. This word is nearly synonymous with lease.