Acre

(a'ker.) [Gr. agros, a field.] (Land Surveying.) An Eng. and Am. measure of land, containing 4 sq. roods, or 160 sq. poles of 5½ yards, or 4840 sq. yards. 121 Irish acres are equal to 196 Eng.; and 48 Scotch to 61 Eng. -1000 Eng. acres = 40,467 French ares. [s. 7]