bower (of bliss), n. — Green’s Dictionary of Slang

bower (of bliss) n.

[SE bower of bliss, ‘a vague poetic word for an idealized abode, not realized in any actual dwelling’ (OED)]

the vagina.

1781		Belle’s Stratagem 68: Those inestimable treasures that are conceal’d in the secret bower of bliss.
1787		Harris’s List of Covent-Garden Ladies 126: The well shaded borders of the bower of bliss, reared upon two living columns of alabaster.
1788		‘The Bower of Bliss’ in Burns Merry Muses of Caledonia (1965) 198: All panting on thy breast recline, / And, murmuring, bless that bower of thine.
1865		‘The Love Feast’ in T.P. Lowry Stories the Soldiers Wouldn’t Tell (1994) 58: When quite undressed, the bower of bliss / Dissolved in one warm rush of piss / Whose briny jet bedewed the nick.
1896		Farmer Vocabula Amatoria (1966) 51: Cabinet, m. The female pudendum; ‘the bower of bliss’.
1980		Maledicta IV:2 (Winter) 185: The anatomical relationship of the bower of bliss and its main channel is indicated in such phrases as the front gut, foregut, forewoman, gape over the garter, lower mouth, the upright grin (except, traditionally, in China), a bit on a fork.