(usually preceded by the) A ceremony during which the soldiers or other officials guarding a major government building or state residence, especially Buckingham Palace in England, are replaced by a new shift.

(law enforcement) An armed person working to provide order, security, discipline, punishment, and prevent escapes of prisoners in a jail that answers to a warden.

Alternative spelling of guardrail

An item of protection worn over the nose. / (American football) A middle guard.

plural of guard rail

The guard or defence of a castle. / (UK, law, obsolete) A tax or imposition on a dwelling within a certain distance of a castle, for the purpose of maintaining watch and ward in it; castleward.

A projecting metal, concrete, or stone exterior architectural element located at the corner and/or foot of gates, portes-cochères, garage entries, and walls to prevent damage from vehicle tires and wheels.

plural of guard book

(advertising) An advertising agency's internal archive of work done for a particular client.

(American football) A lineman for the team in possession of the ball located on either side of the center and inside of the offensive tackles.