n. trade name of a company that produces musical recordings; "the artists and repertoire department of a recording label is responsible for finding new talent"

n. a brief description given for purposes of identification; "the label Modern is applied to many different kinds of architecture"

n. an identifying or descriptive marker that is attached to an object

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

n. in software, identifier of a file or a data structure or variable in a program etc

n. slip of paper used to identify something

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

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

v. pronounce judgment on; "They labeled him unfit to work here"

v. assign a label to; designate with a label; "These students were labelled `learning disabled'"

v. attach a tag or label to; "label these bottles"