\Press"er\, n.
One who, or that which, presses.
{Presser bar}, or {Presser wheel} (Knitting machine), 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.