backjoint

1 definition found

backjoint - Collaborative International Dictionary of English v.0.48 :

  Backjoint \Back"joint`\ (b[a^]k"joint`), n. [Back, a. or adv. +
     joint.] (Arch.)
     A rebate or chase in masonry left to receive a permanent slab
     or other filling.
     [1913 Webster]