Green’s Dictionary of Slang

loc n.1

also lok
[loc adj.]
(US black)

1. a street gang member.

[US]L. Bing Do or Die (1992) 216: I asked a little male lok about that.
[US]Snoop Doggy Dogg ‘2001’ 🎵 Once upon a time in the land of the locs / where it’s all about dope and pistol smoke.
[US](con. 1990s) in J. Miller One of the Guys 96: ‘Twelve-, fourteen- [year-olds] are little locs [...] Little kids like about eleven [...] we call them shorties’ .
[US](con. 1990s) in J. Miller One of the Guys 97: ‘The little locs, they young and they got the energy to burn...We do stuff too, but as much as the little locs’ .

2. a friend.

[US] in W. Shaw Westsiders 309: God please ease my pain, I’m really missin’ my locs.

3. a general term of address.

[US]L. Bing Do or Die (1992) 61: One of my homies say, ‘I gotta idea, Cuz,’ and I say, ‘What’s that, loc?’.
[US]Dr Dre ‘Fuck Wit Dre Day’ 🎵 And watch your back cause you might get smoked, loc.