Sentence:  “[...] this Mr. Grandcourt has wonderful little <WSD>tongue</WSD>. Everything must be done dummy-like without his ordering.” / “Then he's the more whip, I doubt,” said Mrs. Girdle. “"She's" got <WSD>tongue</WSD> enough, I warrant her [...]” 
Meaning of the word marked with <WSD> tags:  Discourse; fluency of speech or expression.