Rudder is defined at Dictionary.com by the Free DictionaryRudder meaning: rudder

Rudder writes that there is no need to make up a story because the numbers are the narrative.

The tank is steered by a single oar rather than a paddle and floats in the middle of the stream.

The sea seemed to be fining off, so they looked around, and found that the rudder was gone.

There are two brass stanchions on the deck near the rudder-head.