blind eye, n. — Green’s Dictionary of Slang

blind eye n.

[coarsely joc. use of SE]

1. the buttocks.

1890–1904		Farmer & Henley Sl. and Its Analogues.
1937–84		Partridge DSUE (1984) 94/2: C.18–early 20.

2. the vagina.

1835		‘My Rummy Poll’s Blind-Eye!’ in Fanny Hill’s Bang-up Reciter 17: But then the thing I most admire, / Is her little black blind eye! [...] I love with it to play, / And just to give the darling ease, / I stroke it night and day!
1890–1904		Farmer & Henley Sl. and Its Analogues.

3. (US gay) the anus [-eye sfx].

1972

get a shove in the blind eye (v.)

of a woman, to have sexual intercourse.

1890–1904

wink at the blind eye (v.)

to have sexual intercourse.

1896

Farmer Vocabula Amatoria (1966) 93: dépêcher. To copulate; ‘to wink at the blind eye’.