to smack one's lips
01
to be really excited for something that is about to happen
![to [smack|lick] {one's} lips definition and meaning](https://cdn.langeek.co/photo/42668/original/?type=jpeg "to [smack|lick] {one's} lips definition and meaning")
Idiom
Informal
例子
As the roller coaster climbed to its peak, the thrill-seekers smacked their lips in excitement for the exhilarating drop that awaited them.
He was licking his lips looking at all those fancy sports cars.
02
to show one's strong desire to eat something by closing and opening one's mouth loudly
例子
" I love chocolate cake, " said Susannah, smacking her lips.
She licked her lips while she waited for the food to be served.
