Definition of acre noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈeɪkə(r)//
; NAmE NAmE//ˈeɪkər//
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a unit for measuring an area of land; 4 840 square yards or about 4 050 square metres 3 000 acres of parkland a three-acre wood (informal) Each house has acres of space around it (= a lot of space). Word OriginOld English æcer (denoting the amount of land a yoke of oxen could plough in a day), of Germanic origin; related to Dutch akker and German Acker ‘field’, from an Indo-European root shared by Sanskrit ajra ‘field’, Latin ager, and Greek agros.
See the Oxford Advanced American Dictionary entry: acre