Definitions for knighthead
A mitred backing timber which extends the after line of the rabbet in the stem to give extra support to the ends of the planks and the bowsprit.
A bollard or bitt.
Either of two timbers rising from the keel of a sailing ship and supporting the inner end of the bowsprit.
Origin: From knight + head; sometimes decorated with a carving of a man's head.
a bollard timber. See under Bollard