Sentence:  There was probably not an <WSD>alienist</WSD> in the land who, having listened so far, would not have sprung at George and held him down with one hand while with the other he signed the necessary certificate of lunacy. But Molly Waddington saw deeper into the matter. 
Meaning of the word marked with <WSD> tags:  An expert in mental illness, especially with reference to legal ramifications.