Tuesday : nm (word from latin Martis dies "March day").
Second day of the week, which follows the Monday.
Come Tuesday. He comes on Tuesday, every Tuesday, every Tuesday evening.
Mardi Gras : last day of carnival, which precedes the Lent.
Dress up for the Mardi Gras (mid-Lent).
Familiar: It's not nardi gras today, said to make fun of a ridiculously dressed person.
Phrase: Button Monday with Tuesday: inserting a button in the wrong buttonhole.