Real Dictionary

label
If something is labelled, a label is attached to it giving information about it.
If you say that someone or something is labelled as a particular thing, you mean that people generally describe them that way and you think that this is unfair.
You can refer to a company that produces and sells CDs as a particular label.
countable noun: A label is a piece of paper or plastic that is attached to an object in order to give information about it.
countable noun: If you say that someone gets a particular label, you mean that people show disapproval of them by describing them with a critical word or phrase.

label in American English
a narrow band of cloth, etc.; fillet
to attach a label to; mark with a label
noun: a slip of paper, cloth, or other material, marked or inscribed, for attachment to something to indicate its manufacturer, nature, ownership, destination, etc
transitive verb: to affix a label to; mark with a label

label in British English
noun: a piece of paper, card, or other material attached to an object to identify it or give instructions or details concerning its ownership, use, nature, destination, etc; tag
verb: to fasten a label to