PLAT. A map of a piece of land, in which are marked the courses and distances of the different lines, and the quantity of land it contains. 2. Such a plat;nay be given in evidence in ascertaining the position of the land, and what is included, and may serve to settle the figure of a survey, and correct mistakes. 5 Monr. 160. See 17 Mass. 211; 5 Greenl. 219; 7 Greenl, 61; 4 Wheat. 444; 14 Mass. 149.