rapper

noun10

1. •
   One who, or that which, raps or knocks.
2. •
   A performer of rap music, or someone who raps in any form of music.

   • He rose from the ghetto to become a successful rapper.
3. •
   The knocker of a door.
4. •
   A mechanical, or later electric, signalling device formerly used in the mines of north-eastern England to signal to the engineman that the cages carrying men or coals up and down the shaft were ready to be raised or lowered.
5. •
   (historical) A swinging knocker for making signals at the mouth of a shaft.
6. •
   A spiritualistic medium who claims to receive communications from spirits in the form of knocking sounds.
7. •
   A flexible strip of metal, 45-60cm long, with handles at each end, used for Northumbrian rapper sword dancing.
8. •
   (informal, old-fashioned) A bold lie; a whopper.
9. •
   (informal, old-fashioned) A loud oath.
10. •
    (Scotland, no longer used) A sword.