rudderpost

English Thesaurus

1. a vertical post at the forward edge of a rudder that enables the rudder to pivot (noun.artifact)

hypernym	:	post,
definition	:	an upright consisting of a piece of timber or metal fixed firmly in an upright position (noun.artifact)

part meronym	:	rudder,
definition	:	(nautical) steering mechanism consisting of a hinged vertical plate mounted at the stern of a vessel (noun.artifact)