Noun

1. Device used with early firearms to push the projectile up against the propellant.
2. Ranch or trail foreman, usually the first or second person in charge. The person responsible for getting the work done.
3. A World War II code name for short range fighter and bomber attacks to destroy ground targets, similar to circus attacks.
   • RAF Web - Air of Authority

     ... the squadron (No. 452) moved to Kenley in July 1941 and took part in the usual round of Circus, Rhubarb and Ramrod missions.

Verb

1. To force.

   That new project manager is just the one to ramrod this through to completion.