pañhā-byākaraṇa: 'answering questions'. "There are, o monks, 4 ways of answering questions: there are questions requiring a direct answer; questions requiring an explanation; questions to be answered by counter-questions; questions to be rejected (as wrongly put)." See D. 33; A. III, 68; A. IV, 42.

Buddhist Dictionary, Manual of Buddhist Terms and Doctrines, by NYANATILOKA MAHATHERA