The Collaborative International Dictionary of English v.0.48:
counterblast \counterblast\ n. a vigorous and unrestrained verbal response; as, her tirade provoked a counterblast from her husband. [WordNet 1.5]WordNet (r) 3.0 (2006):
counterblast n 1: a vigorous and unrestrained response; "her tirade provoked a counterblast from her husband"