Definify.com
Webster 1913 Edition
Planer
Plan′er
,Noun.
1.
One who, or that which, planes; a planing machine; esp., a machine for planing wood or metals.
2.
(Print.)
A wooden block used for forcing down the type in a form, and making the surface even.
Hansard.
Planer centers
. See under
Center
.