D defs.my
Entry 2 senses Webster, 1913

Mardi gras

/mär'-dē grăs/ · Mar·di· gras · IPA /ˈmɑɹdi ɡɹɑ/
01 n. The last day of Carnival; the Tuesday before Ash Wednesday (the beginning of Lent and fasting); Shrove Tuesday; -- in some cities a great d…
  1. 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.
  2. 2.
    The series of festival events celebrated on Mardi Gras{1}. See: Mardi Gras
Syn. pancake day.