Definition of "cassis"

cassis

noun
usually uncountable, plural cassises
1. The blackcurrant plant, Ribes nigrum; the flavor of its berries
2. A liqueur made from these berries, especially crème de cassis.
  Quotations
  The bartender looked at her malevolently for a moment, shook his head, and walked away to mix the drink. "I never had one of those, those vermouth cassises," Freddie said.
  1972, Evan Hunter, Every Little Crook and Nanny, page 132
3. (chiefly US) A wine flavor note, suggesting the fruity and full-bodied characteristics of the fruit; mostly referred to as simply blackcurrant in the UK, where the fruit is common.