an ancient expression of good wishes on a festive occasion, especially in drinking to some one.-an occasion on which such good wishes are expressed in drinking; a drinking bout; a carouse.-the liquor used for a wassail; esp., a beverage formerly much used in england at christmas and other festivals, made of ale (or wine) flavored with spices, sugar, toast, roasted apples, etc.; -- called also lamb's wool.-a festive or drinking song or glee.-of or pertaining to wassail, or to a wassail; convivial; as, a wassail bowl.-to hold a wassail; to carouse.