Sentence:  LEONATO. Tush, tush, man! never <WSD>fleer</WSD> and jest at me: / I speak not like a dotard nor a fool, / As, under privilege of age, to brag / What I have done being young, or what would do, / Were I not old. 
Meaning of the word marked with <WSD> tags:  To make a wry face in contempt, or to grin in scorn