smack1

noun

• a sharp slap or blow, typically one given with the palm of the hand:she gave Mark a smack across the face
• a loud, sharp sound:she closed the ledger with a smack
• a loud kiss:I was saluted with two hearty smacks on my cheeks

verb

• 1strike (someone or something), typically with the palm of the hand and as a punishment:Jessica smacked his face, quite hard
• [with object and adverbial of place] smash, drive, or put forcefully into or on to something:he smacked a fist into the palm of a black-gloved hand

• 2part (one’s lips) noisily in eager anticipation or enjoyment of food or drink: Morgan drank half the Scotch and smacked his lips

• 3 archaic crack (a whip): the four postilions smacked their whips in concert

adverb

• 1in a sudden and violent way:I ran smack into the back of a parked truck

• 2exactly; precisely:our mother’s house was smack in the middle of the city