Definify.com
Webster 1913 Edition
Rudderpost
Rud′der-post
,Noun.
 (Naut.) 
The shank of a rudder, having the blade at one end and the attachments for operating it at the other. 
Definition 2025
rudderpost
rudderpost
English
Noun
rudderpost (plural rudderposts)
- (nautical) The shank of a rudder, having the blade at one end and the attachments for operating it at the other.