coak UK /ˈkəʊk/US /ˈkoʊk/noun 2verb 1forms 3 noun2 •A wooden dowel. •The brass bearing in the sheave of a block. verb1 •To unite (timbers etc.) by means of tenons or dowels in the edges or face.The orlop clamps and shelfpieces are then worked, and the beams and half beams placed thereon, these are coaked and bolted thereto[…] — 1832 formscoaked · coaking · coaks