D defs.my
Entry 2 senses Webster, 1913

Planer

/plānʹər/ · Plan·er · IPA /ˈpɫeɪ̯n.ɚ/
01 n. One who, or that which, planes; a planing machine; esp., a machine for planing wood or metals.
  1. 1.
    One who, or that which, planes; a planing machine; esp., a machine for planing wood or metals.
  2. 2.
    A wooden block used for forcing down the type in a form, and making the surface even.(Print.)
Phrases & compounds
Planer centers — See under Center.