Rapper n. : One who, or that which, raps or knocks; specifically, the knocker of a door.

Rapper n. : A forcible oath or lie.

Example:
What was the copyright lawsuit over a Rapper's album cover based on the arrangement of his jewelry?

Taxonomy
rappers, rap, hip hop, MCs, Kool Moe Dee, Thunder's Mouth Press, On The Mic, God, rhymes, Cambridge University Press, hip hop music, rap lyrics, Adam Krims, History, Rap Music And The Poetics Of Identity, Emceeing, song, cadence.

Defination from the web:
rapper's lyrics are enhanced by a complex vocabulary. ... Battle rapping gained widespread public recognition outside of the African-American community with rapper Eminem's movie, 8 Mile. ...