arm · n
arm (CHAIR)
C2 the part of a chair where your arm rests
Dictionary examples:
The chair didn't have any arms. (18.7)
arm in arm
C2 with your arm gently supporting or being supported by someone else's arm
Dictionary examples:
They walked through the park, arm in arm. (34.9)
(keep sb) at arm's length
C2 to not allow someone to become too friendly with you
Dictionary examples:
I always had the feeling she was keeping me at arm's length. (35.6)
arm (BODY)
A1 the long part at each side of the human body, ending in a hand
Dictionary examples:
She uses her arms to talk. (0.0)
My arms are not long enough for selfies. (0.0)
Her arms are tired from eating pizza. (0.0)
He took/held her in his arms. (25.5)
She put/threw her arms around me, and hugged me to her. (37.1)
My arms ache from carrying this bag. (39.6)