amphorum confuses me.
I think the intended meaning is
bottle washer, or washer of bottles.
In Latin, this should be lavator amphorarum, if my memory of the genitive plural of first declension nouns is correct.
The washer of a bottle (singular) would be lavator amphorae.
Unless, of course, another ABer can correct me.
I have considered the possibility that amphora is a third declension noun, in which case lavator amphorum could be correct, but the plural of amphora is amphorae, confirming it to be first declension.