Sentence:  And there was the case of Tom Hepker , a machinist , who was referred by a friend to a health <WSD>machine</WSD> quack who treated him with a so-called diagnostic machine for what Doctor Fraud said was a system full of arsenic and strychnine . 
Meaning of the word marked with <WSD> tags:  any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks