colloq. or vulgar. Also 5 whapp, 9 whap. [f. next. Cf. WAP sb.1] An act of whopping; a heavy blow or impact; a bump.
c. 1440. York Myst., xxxiii. 199. For a whapp so he whyned and whesid And ȝitt no lasshe to þe lurdan was lente.
a. 1825. Forby, Voc. E. Anglia, Whop, Whap, a heavy blow.
1905. H. G. Wells, Kipps, I. iv. § 1. I was coming downhill, explained the bicyclist . I came rather a whop.