—cheek /tʃiːk/
noun [C] (FACE)
► B1 the soft part of your face that is below your eye and between your mouth and ear: » The tears ran down her cheeks.» rosy cheeks» He embraced her, kissing her on both cheeks.See picture: cheek 
Thesaurus+: ↑The head and face
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Extra Examples:» He gently felt the softness of the baby's cheek.» He had a long livid scar across his cheek.» He pecked his aunt on the cheek.» He has a purplish birthmark on his cheek.» A tear rolled down his cheek.noun [C] INFORMAL (BOTTOM)
► F0 either of the two halves of your bottomThesaurus+: ↑The buttocksnoun [S or U] UK (BEHAVIOUR)
► F0 behaviour or talk that is rude and shows no respect: » He told me off for being late when he arrived half an hour after me. What a cheek!» [+ to infinitive] She's got some cheek to take your car without asking.» He had the cheek to ask me to pay for her!» She's always getting into trouble for giving her teachers cheek (= being rude to them).Thesaurus+: ↑Rude and cheeky , ↑Relating to sex and sexual desireverb [T] UK INFORMAL ↑Verb Endings for cheek
► F0 to be rude to someone: » He's always getting into trouble for cheeking his teachers.Thesaurus+: ↑Insults and abuse , ↑Treating people or animals badly