1.
ice bag; ice pack
A bag filled with ice or cold water, applied to the body to reduce swelling, cool fever, or treat injuries.
A compound of 氷 (ice) and 嚢 (bag, sac). Refers to the classic rubber or fabric bag filled with ice cubes and water, used for cooling the body.
The traditional 氷嚢 — a round rubber bag with a screw cap — is an iconic item in Japanese homes, often associated with sick days and fever care. Modern versions include reusable gel packs and sports-specific ice bags.