Definition of "Smack" :
noun: the act of smacking something; a blow delivered with an open hand
noun: an enthusiastic kiss
noun: street names for heroin
noun: a sailing ship (usually rigged like a sloop or cutter) used in fishing and sailing along the coast
noun: the taste experience when a savoury condiment is taken into the mouth
noun: a blow from a flat object (as an open hand)
verb: press (the lips) together and open (the lips) noisily, as in eating
verb: deliver a hard blow to
"The teacher smacked the student who had misbehaved."
verb: kiss lightly
verb: have a distinctive or characteristic taste
verb: have an element suggestive (of something)
"His speeches smacked of racism."