1) to touch (a person) with the lips to show affection, love or as a greeting (kiss)

2) a piece of cloth used at meals for protecting clothing, for wiping the lips etc (napkin)

3) to push out the lips (as a sign of not being pleased) (pout)

4) (a sound of) a blow given with the open hand, of the lips parted suddenly or a whip; violently and suddenly; to hit (a person) with the open hand (smack)

5) a pleased, happy, amused expression on the face, with (usually a parting of the lips and) loosening of the face muscles (smile)