PLANE
Plane, v. t. [imp. & p. p. Planed; p. pr. & vb. n. Planing.] Etym:
[Cf. F. planer, L. planare, fr. planus. See Plane, a., Plain, a., and
cf. Planish.]

1. To make smooth; to level; to pare off the inequalities of the surface of, as of a board or other piece of wood, by the use of a plane; as, to plane a plank.

2. To efface or remove. He planed away the names . . . written on his tables. Chaucer.

3. Figuratively, to make plain or smooth. [R.] What student came but that you planed her path. Tennyson.

PLANE-PARALLEL
Plane`-par"al*lel, a. (Optics)

Defn: Having opposite surfaces exactly plane and parallel, as a piece of glass.

PLANER
Plan"er, n.

1. One who, or that which, planes; a planing machine; esp., a machine for planing wood or metals.

2. (Print.)

Defn: A wooden block used for forcing down the type in a form, and making the surface even. Hansard. Planer centers. See under Center.