guard

A person who, or thing that, protects or watches over something.

• The prison guard unlocked the door of the cell. After completing the repairs, he replaced the sump guard.
• border guard, prison guard, security guard

A garda; a police officer.Ireland

• The Garda Regulations 1924 required a candidate for appointment as a guard to be able to produce satisfactory references as to his character

A squad responsible for protecting something.

• The president inspected the guard of honour.

A squad responsible for protecting something.; An elite military unit in Russia, the former Soviet Union and several post-Soviet countries.in-pluraloften

The part of a sword that protects the wielder's hand.

• Holonym: hilt

A part of a machine which blocks access to dangerous parts.

• The motorcycle mechanic removed the damaged chain guard.

A watchchain.

A panel of a car that encloses the wheel area, especially the front wheels.Australia

• The reason I'm asking - Whenever I put some weight in the back of the car (say - a passenger or two) the rear tyres can sometimes hit the guards.

A state of caution; posture of defence.uncountable

Something worn to protect part of the body, e.g. the shins in cricket.

To protect from danger; to secure against surprise, attack, or injury; to keep in safety; to defend.transitive

• All of the mountain passes are guarded by troops.

To keep watch over, in order to prevent escape or restrain from acts of violence, or the like.transitive

• Guard the prisoner.

To watch by way of caution or defense; to be cautious; to be in a state or position of defense or safety.ambitransitive

• Careful people guard against mistakes.

To protect the edge of, especially with an ornamental border; hence, to face or ornament with lists, laces, etc.transitive

• The body of your discourse is sometime guarded with fragments, and the guards are but slightly basted on neither.

To fasten by binding; to gird.transitive