Entry 1 sense Webster, 1913 malt whiskey · IPA 01 n. A whiskey distilled in Scotland (esp. whiskey made from malted barley in a pot still); Scotch whisky. 1. A whiskey distilled in Scotland (esp. whiskey made from malted barley in a pot still); Scotch whisky. Syn. Scotch, Scotch-whiskey, Scotch whisky.