The Collaborative International Dictionary of English v.0.48:

Villa \Vil"la\, n.; pl. Villas. [L. villa, LL. also village,
   dim. of L. vicus a village: cf. It. & F. villa. See
   Vicinity, and cf. Vill, Village, Villain.]
   A country seat; a country or suburban residence of some
   pretensions to elegance. --Dryden. Cowper.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Villa
    n 1: Mexican revolutionary leader (1877-1923) [syn: Villa,
         Pancho Villa, Francisco Villa, Doroteo Arango]
    2: detached or semidetached suburban house
    3: country house in ancient Rome consisting of residential
       quarters and farm buildings around a courtyard
    4: pretentious and luxurious country residence with extensive
       grounds