thwack Smith-Hall thwack (subs.): ictus, ūs: v. BLOW: verber, ĕris, n.: v. STRIPE.thwack (v.): mulco, 1: v. BELABOUR, BEAT. Phr.: to t. with a cudgel, fuste dolare, Hor. S. 1, 5, 23: to get soundly t.'d, pugnos edere, Pl. Am. 1, 1, 156.