rapper

noun

1. The knocker of a door.
2. A swinging knocker for making signals at the mouth of a shaft.
3. A spiritualistic medium who claims to receive communications from spirits in the form of knocking sounds.
4. A performer of rap music, or someone who raps in any form of music.
5. A sword.
6. A flexible strip of metal, 45-60cm long, with handles at each end, used for Northumbrian rapper sword dancing.
7. 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.
8. A bold lie; a whopper.
9. A loud oath.