1. (

• label

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

2. (

• tag ,
• label ,
• mark ,

) attach a tag or label to; "label these bottles" ;

3. (

• pronounce ,
• label ,
• judge

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

4. (

• label ,

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

5. (

• label

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