PLAT Meaning of PLAT in English 1. n. US 1 a plot of land. 2 a plan of an area of land. Etymology: 16th c.: collateral form of PLOT 2. n. & v. --n. PLAIT n. 1. --v.tr. (platted, platting) PLAIT v. Oxford English vocab. Оксфордский английский словарь. 2012