Sentence:  The sewer-hunters were formerly, and indeed are still, called by the name of ‘<WSD>Toshers</WSD>', the articles which they pick up in the course of their wanderings along shore being known among themselves by the general term ‘tosh', a word more particularly applied by them to anything made of copper. 
Meaning of the word marked with <WSD> tags:  A scavenger of valuables lost in the sewers, particularly those of London during the Victorian Age.