plan·ish (plān'ĭsh) tr.v.
plan·ished, plan·ish·ing, plan·ish·es To smooth (metal) by rolling or hammering.
[Middle English *planishen, from Old French planir, planiss-, to make smooth, from plan, level, from Latin plānus; see pelə-2 in Indo-European roots.] plan'ish·er n.