Source : Webster's Revised Unabridged Dictionary (1913)

Caballeria \Ca`bal*le*ri"a\, n. [Sp. See {Caballero}.]
   An ancient Spanish land tenure similar to the English
   knight's fee; hence, in Spain and countries settled by the
   Spanish, a land measure of varying size. In Cuba it is about
   33 acres; in Porto Rico, about 194 acres; in the Southwestern
   United States, about 108 acres.