ETYM Old Eng. slappe; akin to lg. slappe, German schlappe; probably of imitative origin.
1. A quick sharp blow; a blow with the open hand.
2. A noise like that of a slap.
3. Rebuff, insult.
4. A blow from a flat object (as an open hand); SYN. smack.
1. To hit with something flat, like a paddle or the open hand
2. To put, place, or throw with careless haste or force
3. To assail verbally; insult
4. To subject to a penalty — usually used with with