From The Collaborative International Dictionary of English v.0.48 [gcide]: 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]