Coak

Webster's Dictionary of the English Language

·noun ·see Coke, ·noun.

II. Coak ·vt To unite, as timbers, by means of tenons or dowels in the edges or faces.

III. Coak ·noun A metallic bushing or strengthening piece in the center of a wooden block sheave.

IV. 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.