smack

1. intransitive verb

2. 1 :  to have a taste or flavor

3. 2 :  to have a trace, vestige, or suggestion a proposal that smacks of treason

1. :  a sailing ship (such as a sloop or cutter) used chiefly in coasting and fishing

1. transitive verb

2. 1 :  to close and open (lips) noisily and often in rapid succession especially in eating

3. 2a :  to kiss with or as if with a smackb :  to strike so as to produce a smack

4. intransitive verb

5. :  to make or give a smack

1. 1 :  a quick sharp noise made by rapidly compressing and opening the lips

2. 2 :  a loud kiss

3. 3 :  a sharp slap or blow

4. 4 US, informal :  boastful or insulting language especially between opponents :  smack talk, trash talk —usually used in the phrase talk smack The college basketball season is barely a month old, yet the top two candidates for national player of the year are already talking smack. — Grant Wahl

1. :  squarely and sharply :  directly smack in the middle

slang

1. :  heroin

1. 1 :  to make or give a noisy slap

2. 2 :  to close and open the lips noisily especially in eating

3. 3 :  to kiss usually loudly or hard

1. 1 :  a noisy slap or blow

2. 2 :  a quick sharp noise made by the lips (as in enjoyment of some taste)

3. 3 :  a loud kiss

1. :  in a square and sharp manner :  directly One side of the house … was smack up against the mountain … — Virginia Hamilton, M. C. Higgins

1. :  to seem to contain or involve The remark smacks of spite.

1. :  a slight taste, trace, or touch of something I had always my eye open for seafaring men … and … he had a smack of the sea about him … — Robert Louis Stevenson, Treasure Island