/ay"keuhr/ , n.
1. a common variable unit of land measure, now equal in the U.S. and Great Britain to 43,560 square feet or 1 / 640 square mile (4047 square meters).
2. acres ,
a. lands; land: wooded acres.
b. Informal. large quantities: acres of Oriental rugs.
3. Archaic. a plowed or sown field.
[ bef. 1000; ME aker, OE aecer; c. OFris ekker, OS akkar, OHG ackar (G Acker ), ON akr, Goth akers, L ager, Gk agrós, Skt ájra-; see also ACORN, AGRARIAN, AGRESTIC, AGRICULTURE, AGRO- ]