'Rudderstock' definitions:

Definition of 'rudderstock'

From: WordNet
noun
A vertical post at the forward edge of a rudder that enables the rudder to pivot [syn: rudderpost, rudderstock]

Definition of 'Rudderstock'

From: GCIDE
  • Rudderstock \Rud"der*stock`\, n. (Naut.) The main part or blade of the rudder, which is connected by hinges, or the like, with the sternpost of a vessel. [1913 Webster]