/play"neuhr/ , n.
1. Carpentry. a power machine for removing the rough or excess surface from a board.
2. Metalworking. a machine for cutting flat surfaces, having a cutting tool supported by an overhead frame beneath which the work slides back and forth. Cf. shaper (def. 2).
3. Typesetting. a block of smooth, hard wood for leveling the type in a chase by tapping with a mallet.
[ 1375-1425; late ME; see PLANE 2 , -ER 1 ]