Entry 3 senses · 3 variants Webster, 1913 Slap /slăp/ · IPA /slæp/ n. v. t. adv. 01 n. A blow, esp. one given with the open hand, or with something broad. 1. A blow, esp. one given with the open hand, or with something broad. 02 v. t. To strike with the open hand, or with something broad. imp. & p. p. Slapped; p. pr. & vb. n. Slapping 1. To strike with the open hand, or with something broad. 03 adv. With a sudden and violent blow; hence, quickly; instantly; directly. 1. With a sudden and violent blow; hence, quickly; instantly; directly.[Colloq.]