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. [1913 Webster]