muffin top

or muf·fin-top


noun

a crisp, flat muffin that resembles the top portion of a typical muffin.
Informal. a roll of excess fat that hangs out over a person's waist when wearing a garment with a tight waistband.

Origin of muffin top

First recorded in 1910–15

British Dictionary definitions for muffin top

muffin top

noun

informal a roll of flesh spilling over the top of a tight skirt or trousers, esp when the midriff is exposed

Word Origin for muffin top

C21: from the similarity of this to a muffin expanding over its case