Green’s Dictionary of Slang

a plagiarist, esp. in rap/hip-hop, etc.

1987		Eble Campus Sl. Oct.
1997–2000		Da Bomb 🌐 25: Shark biter: Someone who copies something from someone else.
1998		Source Nov. 200: Not that they’re biters, but [the] underground favourites were obviously weaned on the artful sounds of Tip, Phife and Ali.
2002		‘Touré’ Portable Promised Land (ms.) 156: We Words (My Favorite Things) [...] Biter. Butta.
2005		B. Coleman Rakim Told Me 144: ‘Back in the day it was better when you didn’t sound like anyone else. Otherwise you were considered a biter’.