1.NounA house serving as a weekend and holiday residence, used as a retreat from city life; traditionally and archetypically in the country, and especially of wealthy owners.
2.NounSuch a house, even as a primary residence and even in an area that is no longer rural, but with an aesthetic in keeping with that traditional distinction of country ways.
"a country house look"
3.NounUsed other than figuratively or idiomatically: see country, house: a house in the country: one not in town.