Definition of Evasive Answer
One which consists in refusing either to admit or to deny a matter in a direct, straight -forward manner as to which the person is necessarily presumed to have knowledge. Under Fed.R.Civil P. 37, an evasive answer is considered and treated as a failure to answer, for which a party may on motion seek a court order compelling answers to discovery questions.
That's the definition of Evasive Answer in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.