verb
    
    smacks; smacked; smacking
    
    [+ obj] to slap or hit (someone or something) hard
    
    
    
    
    
    always followed by an adverb or preposition :to set or hit (something) on or against something else so that it makes a loud noise
    
    
    
    
    
    US informal :to kiss (someone) loudly
    
    
    
    smack of
    
    [phrasal verb]
    
    smack of (something) :to seem to contain or involve (something unpleasant)
    
    
    
    smack your lips
    
    to close and open your lips noisily especially before or after eating or drinking
    
    
    
    noun
    
    plural smacks
    
    [count] a hard slap or hit
    
    
    
    a loud noise that is made when something hits something else in a forceful way
    
    
    
    informal :a loud kiss
    
    
    
    noun
    
    [noncount] :a small, noticeable amount of a particular thing
    
    
    
    
    
    adverb
    
    informal :exactly or directly
    
    
    
    
    
    noun
    
    [noncount] slang :heroin - compare 2smack 3smack 6smack
    
    noun
    
    plural smacks
    
    [count] Brit :a small fishing boat - compare 2smack 3smack 5smack