whis·key (chiefly US + Ireland) or chiefly Brit whis·ky 
/ˈwɪski/ noun
plural whis·keys or whis·kies /ˈwɪski/ noun [count, noncount] : a strong alcoholic drink made from a grain (such as rye, corn, or barley)
▪ He ordered a whiskey and soda. [=whiskey mixed with soda water] ▪ a glass of whiskey ◊The usual spelling in the U.S. and Ireland is whiskey, but some writers use whisky when referring to the drink made in Scotland. In British and Canadian English, whisky is the usual spelling but whiskey is used for American and Irish whiskey. — compare bourbon, scotch
▪ He ordered a whiskey and soda. [=whiskey mixed with soda water] ▪ a glass of whiskey ◊The usual spelling in the U.S. and Ireland is whiskey, but some writers use whisky when referring to the drink made in Scotland. In British and Canadian English, whisky is the usual spelling but whiskey is used for American and Irish whiskey. — compare bourbon, scotch
