a loud kiss

a noisy parting of the lips

to hit (somebody) smartly, esp with the open hand in punishment

to open (the lips) with a sudden sharp sound, esp in anticipation of food or drink

to make or give a smack

(+ of) to have the taste or smell of something

(+ of) to have a trace or suggestion of something

This appointment smacks of nepotism

a characteristic taste or smell

a slight trace or suggestion