Sentence:  Varro, as Kent remarks (p. 418, n."f"), is by no means logical in every detail; he merely <WSD>chops logic</WSD> when he declares that "curro" lacks the perfect participle. 
Meaning of the word marked with <WSD> tags:  To make an argument which is illogical, especially one which is overly complex or which improperly uses fine or clever distinctions; to equivocate.