Green’s Dictionary of Slang

1. (W.I.) a woman of mixed race.

1995		Francis-Jackson Official Dancehall Dict. 7: Browning light-complexioned girl, not quite a mulatto: u. me love mi browning bad.
2001		(con. 1981) A. Wheatle East of Acre Lane 81: You say you don’t like dark skin girl an’ dat you love your browning.
2008		A. Wheatle Dirty South 33: She was a lighter skin tone to me, browning.
2015		Section Boyz ‘Trapping Ain’t Dead’ 🎵 On a trap round / With a mad browning.

2. (UK black) an Asian girl.

1997

C. Newland Scholar 49: ‘That brownings is smilin’ at me already, man.’ [...] Cory looked at the Asian girl as she danced.