Green’s Dictionary of Slang

greaze n.1

[play on smooth adj., note talk greasy under greasy adj.1 ]

(UK black) used to denote excellence, of individuals, money, lyrics, etc.

Jme ‘Man Don’t Care’ 🎵 How could a man with a uni degree / Be bussing up mic and chatting this greaze?
Drake ‘KMT’ 🎵 Long as they pockets is greaze (Greaze!).