lip 
/ˈlɪp/ noun
plural lips /ˈlɪp/ noun 1 [count] : either one of the two soft parts that surround the mouth
▪ the lower/upper lip ▪ thin/thick/full lips ▪ He had a cut on his lip. ▪ He kissed her (right) on the lips. ▪ She was nervously biting her lip. ▪ She had a smile on her lips. [=she was smiling] — see picture at mouth; see also stiff upper lip at 1stiff 2 [count] : the edge of a cut or hole
▪ the lips of a wound ▪ the lip of a crater 3 [count] : the edge of a container especially where it is slightly spread out
▪ the lip of a pitcher 4 [noncount] informal : rude speech in reply to someone who should be spoken to with respect
▪ Don't give me any of your lip! [=don't talk to me in that disrespectful way]
▪ the lower/upper lip ▪ thin/thick/full lips ▪ He had a cut on his lip. ▪ He kissed her (right) on the lips. ▪ She was nervously biting her lip. ▪ She had a smile on her lips. [=she was smiling] — see picture at mouth; see also stiff upper lip at 1stiff
▪ the lips of a wound ▪ the lip of a crater
▪ the lip of a pitcher
▪ Don't give me any of your lip! [=don't talk to me in that disrespectful way]
button your lip/lips — see 2button
fat lip — see 1fat
lick your lips — see 1lick
my lips are sealed
informal — used to say that you will not tell secret information to anyone ▪ Your secret is safe with me: my lips are sealed.
on everyone's/everybody's lips
informal : being said or discussed by many people
▪ The celebrity murder trial was on everyone's lips.
▪ The celebrity murder trial was on everyone's lips.
on the lips of
informal : being said or discussed by (people)
▪ trendy words on the lips of talk show hosts ▪ a topic that is on the lips of many people
▪ trendy words on the lips of talk show hosts ▪ a topic that is on the lips of many people
pass your lips — see 1pass
read lips — see 1read
smack your lips — see 1smack
zip your lip — see 1zip
