Sentence:  Aging but still precocious , French feline enfant terrible Francoisette Lagoon has succeeded in shocking jaded old Paris again , this time with a sexy ballet scenario called The Lascivious Interlude , the story of a nymphomaniac trip-hammer <WSD>operator</WSD> who falls hopelessly in love with a middle-aged steam shovel . 
Meaning of the word marked with <WSD> tags:  an agent that operates some apparatus or machine