Source : Webster's Revised Unabridged Dictionary (1913)

Planish \Plan"ish\, v. t. [imp. & p. p. {Planished}; p. pr. &
   vb. n. {Planishing}.] [OF. planir, F. planer. See {Plane},
   v., and {-ish}.]
   To make smooth or plane, as a metallic surface; to condense,
   toughen, and polish by light blows with a hammer.

Planishing \Plan"ish*ing\,
   a. & vb. n. from {Planish}, v. t.

   {Planishing rolls} (Coining), rolls between which metal
      strips are passed while cold, to bring them to exactly the
      required thickness.