Chinese food

(biology, anatomy) a tentacle: specifically, either of the two tentacles of a squid or cuttlefish that are longer than the other eight (technically called “arms”)

to use someone's arm as a pillow

using someone's arm as a pillow

a forearm; an antebrachium

a wristwatch

(idiomatic, usually cooking) to display one's ability

arm wrestling

the title of a rakugo shaggy-dog story / Synonym of 千早の歌 (Chihaya no uta): a poem used as an insect repellent

(historical, rare) something old or that has been around for a long time