Definition of sticker noun from the Oxford Advanced Learner's Dictionary

 

sticker

 noun
noun
BrE BrE//ˈstɪkə(r)//
 
; NAmE NAmE//ˈstɪkər//
 
 
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a sticky label with a picture or message on it, that you stick onto something bumper stickers (= on cars) a sticker album (= to collect stickers in) The pack will contain a membership card, car stickers and a newsletter. Synonymslabeltag stickerThese are all words for a piece of paper, fabric or plastic that is attached to something and gives information about it.label a small piece of paper, fabric or plastic that is attached to something in order to show what it is or give information about it:The washing instructions are on the label. address labels He’ll only wear clothes with a designer label.tag (often used in compounds) a small piece of paper, fabric or plastic that is attached to something, or that somebody wears, in order to give information about it/​them:Everyone at the conference had to wear a name tag.label or tag?Labels in clothes are usually made of fabric and sewn in. Tags on clothes are usually made of cardboard and cut off before you wear the clothes. A name tag can be stuck or tied onto somebody to show who they are:All babies in the hospital have name tags tied round their ankles.Price tag is much more frequent than price label and is used for both literal and figurative meanings:What does the price tag say? There is a £20 million price tag on the team’s star player. A label can also be a sticker that you put on an envelope. sticker a sticky label with a picture or message on it, that you stick on to something.Patterns a price label/​tag/​sticker to have a label/​tag/​sticker to attach/​put on/​stick on a label/​tag/​sticker The label/​tag/​sticker says…
See the Oxford Advanced American Dictionary entry: sticker