\Tooth"ing\, n.
1. The act or process of indenting or furnishing with teeth.
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.
{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.