\Joint"ing\, n.
The act or process of making a joint; also, the joints thus
produced.
{Jointing machine}, a planing machine for wood used in
   furniture and piano factories, etc.
{Jointing plane}. See {Jointer}, 2.
{Jointing rule} (Masonry), a long straight rule, used by
   bricklayers for securing straight joints and faces.