1. Proper noun.  Old name of a city in modern Israel famed from the Crusades: see Acco.
  2. Proper noun.  A state in north-western Brazil, bordering Peru and Bolivia.
  3. Proper noun.  (surname) .
  4. Noun.  (obsolete) A field.
  5. Noun.  A unit of surface area (''symbol'' a. ''or'' ac.), originally as much as a yoke of oxen could plough in a day; later defined as an area 1 chain (22 yd) by 1 furlong (220 yd), or 4,840 square yards. Equivalent to about 4,046.86 square metres.
  6. Noun.  (in the plural, informal) A large amount (of area).

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This entry was last updated on RefTopia from its source on 3/20/2012.