English definition of “arm”
/ɑːm/ noun [C]
BODY PART › the long part at each side of the human body, ending in a hand: She held the tiny baby in her arms. He put his arms around her. She was standing with her arms folded (= with one arm crossed over the other).
arm in arm › with your arm gently supporting or being supported by someone else's arm: They walked through the park, arm in arm.
CLOTHES › the part of a piece of clothing that you put your arm in
CHAIR › the part of a chair where your arm rests → See also arms