Slap (?), n. [OE. slappe; akin to
LG. slappe, G. schlappe; probably of imitative origin.]
A blow, esp. one given with the open hand, or with something
broad.
Slap, v. t. [imp. & p.
p. Slapped (?); p. pr. & vb. n.
Slapping.] To strike with the open hand, or with something
broad.
Slap, adv. [Cf. LG. slap, G.
schlapp. See Slap, n.] With a
sudden and violent blow; hence, quickly; instantly; directly.
[Colloq.] "The railroad cars drive slap into the city."
Thackeray.