The title 《金瓶梅》 takes one character from three women of his house: 潘金莲, his sixth wife 李瓶儿 and the maid 庞春梅. Readers also see 金 'gold' as money, 瓶 'vase' as wine and 梅 'plum' as lust.
usage
Hong Kong actor 单立文 played him so often in the 1990s that he was dubbed the 西门庆专业户. 专业户, first a farm household that specialises in one product, is the stock word for an actor typecast in one role.