villa

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The often large, luxurious country house of a well-to-do person.
• noun A country estate with a substantial house.
• noun Chiefly British A house in a middle-class suburb.

from The Century Dictionary.

• noun A country-seat; a rural or suburban mansion; a country residence, properly one of some size and pretension, though the name is commonly misapplied, especially in Great Britain, to a cottage, or to one of the class of cheap houses built on speculation in the suburbs of a city; in old English law, a manor.

from the GNU version of the Collaborative International Dictionary of English.

• noun A country seat; a country or suburban residence of some pretensions to elegance.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A house, often larger and more expensive than average, in the countryside or on the coast, often used as a retreat.
• noun UK A family house, often semi-detached, in a middle class street.
• noun a country house, with farm buildings around a courtyard.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun Mexican revolutionary leader (1877-1923)
• noun detached or semidetached suburban house
• noun pretentious and luxurious country residence with extensive grounds
• noun country house in ancient Rome consisting of residential quarters and farm buildings around a courtyard