Jointing

n.
  1. The act or process of making a joint; also, the joints thus produced.
    2. 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.