Green’s Dictionary of Slang

V-8 n.

[? abbr. SE deviate, i.e. she ‘must be’ a lesbian]

(US black) a solitary woman who prefers her own company to that of others, esp. of men.

[US]Cab Calloway New Hepsters Dict. in Calloway (1976) 260: v-8 (n.): a chick who spurns company, is independent, is not amenable.