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noun

  1. An English unit of land area (symbol: a. or ac.) originally denoting a day's plowing for a yoke of oxen, now standardized as 4,840 square yards or 4,046.86 square meters.

  2. Any of various similar units of area in other systems.

  3. (usually in the plural) A wide expanse.

    "I like my new house - there’s acres of space!"

  4. (usually in the plural) A large quantity.

  5. A field.

  6. The acre's breadth by the length, English units of length equal to the statute dimensions of the acre: 22 yds (≈20 m) by 220 yds (≈200 m).

  7. A duel fought between individual Scots and Englishmen in the borderlands.

Synonyms: morgen, feddan, arpen, arpent, pose, bigha, cawney, cawny, Irish acre, collop, plantation acre, juger, jugerum, Scotch acre, Scots acre, Scottish acre, acair, Welsh acre, cover, cyfair, erw, stang, day's math, demath