Sentence:  According to the Food and Drug Administration ( FDA ) , `` Doctor '' Ghadiali , Dr. Albert Abrams and his clique , and Dr. Wilhelm Reich - to name three notorious <WSD>device</WSD> quacks - succeeded , respectively , in distributing 10000 , 5000 , and 2000 fake health machines . 
Meaning of the word marked with <WSD> tags:  an instrumentality invented for a particular purpose