Green’s Dictionary of Slang

penocha n.

[synon. Sp. sl.]

(US black/Sp.) the vagina.

1980		E. Folb Runnin’ Down Some Lines 210: ‘Penocha’ (vagina).
1984		Frank Zappa ‘Camarillo Brillo’ [live lyrics] I chewed my way through her rancid penocha.