arm

When Timothy and Julia hurried up the staircase to the bedroom floor, where a considerable commotion was taking place, Tim took Barry Leach with him. He had him gripped firmly by the arm, since he felt it was not safe to let him loose, and he had no immediate idea what to do with him.

The arm and forearm are parts of the upper limb in the human body.

the arms of an octopus

[…] one arm of this jacket streamed behind him like the broidered arm of a huzzar’s surcoat.

The robot arm reached out and placed the part on the assembly line.

Shelburne Bay is an arm of Lake Champlain.

the cavalry arm of the military service

the arm of the law

The team needs to sign another arm in the offseason.