<p><strong>Noun</strong></p><ul><li>a sudden, hard stroke with a hand, fist, or weapon: a blow to the head.</li><li>Synonyms: knock, beat, box, cuff, slap, rap, thwack, thump, buffet.</li><li>a sudden shock, calamity, reversal, etc.: His wife's death was a terrible blow to him.</li><li>a sudden attack or drastic action: The invaders struck a blow to the south.</li></ul>