Definition of "Label" :

noun: trade name of a company that produces musical recordings

"The artists and repertoire department of a recording label is responsible for finding new talent."

noun: a brief description given for purposes of identification

"The label modern is applied to many different kinds of architecture."

noun: an identifying or descriptive marker that is attached to an object

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

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

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

verb: pronounce judgment on

"They labeled him unfit to work here."

verb: assign a label to; designate with a label

"These students were labelled learning disabled'."

verb: attach a tag or label to

"Label these bottles."