baptistery
/ˈbæptɪstərɪ/(亦作baptistry /-trɪ/ )
noun
(pl. -ies)
1- the part of a church used for baptism（教堂中的）洗礼堂。
1.1
- historical a building next to a church, used for baptism〈史〉（教堂旁的）洗礼堂。
1.2
- (in a Baptist chapel) a sunken receptacle used for baptism by total immersion（浸礼会礼拜堂中的）浸礼池。
词源
Middle English: from Old French baptistere, via ecclesiastical Latin from ecclesiastical Greek baptistērion, from baptizein 'immerse， baptize'.