Source : WordNet®

give off
     v 1: have as a by-product; "The big cities gave off so many
          wonderful American qualities"
     2: give off, send forth, or discharge; as of light, heat, or
        radiation, vapor, etc.; "The ozone layer blocks some
        harmful rays which the sun emits" [syn: {emit}, {give out}]
        [ant: {absorb}]