Definitions

1. noun

a pistol or other small firearm that is carried in the hand when not in use, especially by a police officer.

“The detective drew her sidearm from its holster.”

2. noun

the hand or direction of a turn in a particular sport, especially in sailing, rowing, or cycling.

“The sailor had to make a quick turn to keep the boat on the right sidearm.”

3. verb

to aim or fire a sidearm, especially in a sudden or emergency situation.

“The officer was forced to sidearm the suspect.”