D defs.my
Entry 2 senses Webster, 1913

Acre

/āʹkər/ · A·cre · IPA /ˈeɪ.kɚ/
01 n. Any field of arable or pasture land.
  1. 1.
    Any field of arable or pasture land.[Obs.]
  2. 2.
    A piece of land, containing 160 square rods, or 4,840 square yards, or 43,560 square feet. This is the English statute acre. That of the United States is the same. The Scotch acre was about 1.26 of the English, and the Irish 1.62 of the English.
    “I like that ancient Saxon phrase, which calls The burial ground, God's acre.” Longfellow.
Phrases & compounds
Broad acres — many acres, much landed estate.
God's acre — God's field; the churchyard.