rudderpost

or rud·der post

[ ruhd-er-pohst ]
/ ˈrʌd ərˌpoʊst /

noun Nautical.

the vertical member of a stern frame on which the rudder is hung; a sternpost.

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Origin of rudderpost

First recorded in 1685–95; rudder + post1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for rudderpost

rudderpost
/ (ˈrʌdəˌpəʊst) /

noun nautical

Also called: rudderstock (ˈrʌdəˌstɒk) a postlike member at the forward edge of a rudder
the part of the stern frame of a vessel to which a rudder is fitted
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012