Presser /(?)/

Press·er

Presser

n.
  1. One who, or that which, presses.

Phrases & Compounds
Presser bar
a bar or wheel which closes the barbs of the needles to enable the loops of the yarn to pass over them.
Presser foot
the part of a sewing machine which rests on the cloth and presses it down upon the table of the machine.