knife pleat

/N AY1 F P L IY1 T/
noun
  1. 1

    A type of sharply pressed pleating, especially in a skirt or kilt, in which all of the folds are turned in one direction, with each pleat being three layers of fabric thick.

Translate “knife pleat” into another language

Source: https://en.wiktionary.org/wiki/knife%20pleat