n. 1. The act or process of indenting or furnishing with teeth. [ 1913 Webster ]

2. (Masonry) Bricks alternately projecting at the end of a wall, in order that they may be bonded into a continuation of it when the remainder is carried up. [ 1913 Webster ]

Toothing plane, a plane of which the iron is formed into a series of small teeth, for the purpose of roughening surfaces, as of veneers. [ 1913 Webster ]