a tool for washing floors that has a long handle with soft material or a bunch of thick strings at the end 拖把；墩布 
a mop and bucket 带水桶的拖把 I used a mop to clean the floor. 我用拖把擦地板。
a kitchen utensil (= a tool) for washing dishes, that has a short handle with soft material at one end 洗碗刷 a mass of thick, often untidy, hair 乱蓬蓬的头发 a mop of curly red hair 乱蓬蓬的红色鬈发
Word Originlate 15th cent.: perhaps ultimately related to Latin mappa ‘napkin’.