crimper

/K R IH1 M P ER0/
noun
  1. 1

    A small climbing hold that can only be held with the tips of a person's fingers.

  2. 2

    A hairdresser.

  3. 3

    A device for giving hair a wavy appearance.

  4. 4

    Someone who adds pleats to fabric for clothes, drapery, etc.

  5. 5

    A tool used to crimp, to join two pieces of metal.

  6. 6

    An instrument for crimping or ruffling pastry when making a pie.

  7. 7

    A curved board or frame over which the upper of a boot or shoe is stretched to the required shape.

  8. 8

    A machine for crimping or ruffling textile fabrics.

Source: https://en.wiktionary.org/wiki/crimper