label

(noun) a brief description given for purposes of identification. Examples: "The label modern is applied to many different kinds of architecture."

(noun) trade name of a company that produces musical recordings. Synonyms: recording label. Examples: "The artists and repertoire department of a recording label is responsible for finding new talent."

(noun) a radioactive isotope that is used in a compound in order to trace the mechanism of a chemical reaction.

(noun) an identifying or descriptive marker that is attached to an object.

(verb) assign a label to; designate with a label. Examples: "These students were labelled `learning disabled'."

(verb) attach a tag or label to. Synonyms: tag, mark. Examples: "Label these bottles."

(verb) pronounce judgment on. Synonyms: pronounce, judge. Examples: "They labeled him unfit to work here."

(verb) distinguish (as a compound or molecule) by introducing a labeled atom.

(verb) distinguish (an element or atom) by using a radioactive isotope or an isotope of unusual mass for tracing through chemical reactions.