chafing dish
/ˈtʃeɪfɪŋ/noun
1- a cooking pot with an outer pan of hot water, used for keeping food warm（有夹层内盛热水的）食品保温锅。
1.1
- a metal pan, typically one containing a spirit lamp or burning charcoal, used for cooking at table（尤用酒精灯或木炭加温的）火锅。
词源
late 15th cent.: from the original (now obsolete) sense of CHAFE 'become warm， warm up'.