‖n. [ F., literally, fat Tuesday. ] 1. The last day of Carnival; the Tuesday before Ash Wednesday (the beginning of Lent and fasting); Shrove Tuesday; -- in some cities a great day of carnival and merrymaking; in the United States it is especially associated with New Orleans. Syn. -- pancake day. [ 1913 Webster ]
2. The series of festival events celebrated on Mardi Gras{ 1 }. [ PJC ]