The day before Lent and Ash Wednesday. Though named for its former religious significance, it is chiefly marked by feasting and celebration, which traditionally preceded the observance of the Lenten fast.
The name Shrove comes from the old middle English word ‘Shriven’ meaning to go to confession to say sorry for the wrong things you’ve done. Lent always starts on a Wednesday, so people went to confessions on the day before. This became known as Shriven Tuesday and then Shrove Tuesday.