What does "coak" mean?

Coak: (Carp.) A kind of tenon connecting the face of a scarfed timber with the face of another timber, or a dowel or pin of hard wood or iron uniting timbers. [Also spelt coag.]

Additional senses

  1. 2.A metallic bushing or strengthening piece in the center of a wooden block sheve.
  2. 3.To unite, as timbers, by means of tenons or dowels in the edges or face. Totten.

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