Green’s Dictionary of Slang

to perform cunnilingus.

1888–94		‘Walter’ My Secret Life (1966) IV 820: I gamahuched her [...] She had never been cunt-licked before.
1988		in E. Cray Erotic Muse (1992) 365: Can he give cunt licks, or use his hand? / Because I cannot fuck his shriveled gland. [...] Cunt lick! Cunt lick! Eat me out, rah!