Green’s Dictionary of Slang

fiend v.

[fig. use of fiend n.]

1. (US black) to steal, esp. in the street.

[US]C. Stroud Close Pursuit (1988) 95: They called their work ‘fiending the heads.’.

2. (US drugs) to suffering withdrawal from narcotics.

[US]Simon & Burns Corner (1998) 357: His employers at Seapride [...] believed that he was more than just another fiending crudball.
[US]T. Fontana ‘A Game of Checkers’ Oz ser. 1 ep. 8 [TV script] We’re out of heroin. Atabisi and his pals’re starting to fiend.
[US]ONDCP Street Terms 9: Feenin — Behavior associated with a person craving cocaine or other addictive substances when they are unavailable.

3. (US prison) to need intensely; to be addicted to.

[US]L. Stavsky et al. A2Z 35/1: The poor sucka’s feanin’ for some crack. [Ibid.] 35/2: The young MC’s fiendin’ for a turn at the mic.
[US]T. Fontana ‘Visits’Oz ser. 1 ep. 2 [TV script] I fiendin’ to see my wife.
[US]Village Voice (N.Y.) 2 May n.p.: My younger brother, K, was fiending for a turkey sandwich.
[US]Teen Lingo: The Source for Youth Ministry [Internet] fiendin needing, like an urge. ‘I’m fiendin fer some cigs right now.’.
[US]UGK ‘Like That’ [lyrics] Damn this pussy drive me fuckin crazy / I’m fiendin to eat it baby.
[US]J. Stahl Pain Killers 120: That’s what it means to fiend for something . . . You need it more than you care that it’s going to kill you.

4. (US black) to act aggressively.

[US]L. Stavsky et al. A2Z.

In phrases

fiend (on) (v.) (US black)

1. to show off, to outdo a rival.

[US]E. Folb Urban Black Argot 137: Fiend On to show up someone, particularly while in one’s car.
[US]E. Folb Runnin’ Down Some Lines 99: Da’s when a cat wanna scene, get fiendin’ on you.
[US]Dr Dre ‘Bitch Ass Niggaz’ [lyrics] The top notch nigga, I’m fiendin for that spot.

2. to covet, to lust after, to become obsessed with.

[US](con. 1960s) D. Goines Black Gangster (1991) 287: My thigh ain’t nowhere near white, nigger, so you might as well stop fiendin’ on it.
[US]UGK ‘Cramping My Style’ [lyrics] Cause, I ain’t about havin nobody feenin on my jock!
[US]Mack 10 ‘Based on a True Story’ [lyrics] Fienin for a hit, and you lookin for more.
[US]P. Beatty Sellout (2016) 142: Look at you, fiending after some white bitch like every other L.A. nigger.