especially: an emphatic response to or rebuttal of another's argument, criticism, etc.
… the uselessly combative essay he [Wordsworth] included in the 1815 edition of his poems, designed as a counterblast to Jeffrey and all his other critics … Adam Kirsch
There is reason to believe that the work on which Kant was engaged in the last years of his life was intended as a counter-blast to such critics. W. H. Walsh