coak

• ⇰ See Coke>, <pos>n.</pos>
• ⇰ 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.
• ⇰ A metallic bushing or strengthening piece in the center of a wooden block sheave.

• ⇰ To unite, as timbers, by means of tenons or dowels in the edges or faces.