noun ·see coke, ·noun.
2. coak ·vt to unite, as timbers, by means of tenons or dowels in the edges or faces.
3. coak ·noun a metallic bushing or strengthening piece in the center of a wooden block sheave.
4. coak ·noun 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.