A plane or (now usually) a planing machine used for smoothing wood, etc.

a machine for planing wood, metal, etc.

a machine for planing timber, a planing machine; = surface plane n. (b).

the use or action of a surface planer.

(a) a workshop where planing is done; (b) = planing machine n.

(a) a plane forming or defining a surface; (b) Engineering = surface planer n.; (also) a carpenter's plane for planing a flat surface.

spec. A woodworking machine for cutting and planing the surface of wooden boards.

A thicknessing machine.