1.
to move your tongue over your lips, especially before eating sth good
2.
( informal ) to show that you are excited about sth and want it to happen soon :
They were licking their lips at the thought of clinching the deal.
1.
to move your tongue over your lips, especially before eating sth good
2.
( informal ) to show that you are excited about sth and want it to happen soon :
They were licking their lips at the thought of clinching the deal.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005