Any of various similar units of area in other systems.
An English unit of land area (symbol: a. or ac.) originally denoting a day's ploughing for a yoke of oxen, now standardized as 4,840 square yards or 4,046.86 square meters.
A wide expanse.
An area of 10,240 square yards or 4 quarters.
A large quantity.
A syllable used in sol-fa (solfège) to represent the third note of a major scale.