Green’s Dictionary of Slang

(US campus) well-defined muscles.

1973		C. Gaines Stay Hungry 123: Stewart’s got the bulk on him but the nigger’s got the cuts.
1983		R. Price Breaks 178: There was enough moonlight coming in to [...] highlight the beginnings of my new ridges and cuts.
1997–2001		Online Sl. Dict. 🌐 cuts n 1. muscles. (‘Want to feel my cuts?’).