What does area mean?
The definition of area
A”re*a, n.; pl. Areas .
Etym: [L. area a broad piece of level groAre, n.]

1 Any plane surface, as of the floor of a room or church, or of the ground within an inclosure; an open space in a building. The Alban lake . . . looks like the area of some vast amphitheater. Addison.
2 The inclosed space on which a building stands.
3 The sunken space or court, giving ingress and affording light to the basement of a building.
4 An extent of surface; a tract of the earth’s surface; a region; as, vast uncultivated areas.
5 (Geom.)
The superficial contents of any figure; the surface included within any given lines; superficial extent; as, the area of a square or a triangle.
6 (Biol.)
A spot or small marked space; as, the germinative area.
7 Extent; scope; range; as, a wide area of thought. The largest area of human history and man’s common nature. F. Harrison. Dry area. See under Dry.