To press together and open (the lips) quickly and noisily, as in eating or tasting. 2. To kiss noisily. 3. To strike sharply and with a loud noise. 1. To make or give a smack. 2. To collide sharply and noisily: The ball smacked against the side of the house. n. 1. The loud sharp sound of smacking. 2. A noisy kiss. 3. A sharp blow or slap. 1. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.