- Quass, alternatively spelled kvass, is a fermented Russian beer-like drink made from fermented rye or barley bread.
An example of a quass is a very low alcohol beverage sold in Eastern Europe made from fermented bread which is often flavored with fruits.
(countable and uncountable, plural quasses)
- Alternative spelling of kvass.
(third-person singular simple present quasses, present participle quassing, simple past and past participle quassed)
- (obsolete) to drink deeply; to quaff.