Green’s Dictionary of Slang

bushel-cunt n.

[SE bushel, a measure of volume; thus a large quantity + cunt n. (1)]

a large vagina; thus bushel-cunted adj.

[UK]Rochester ‘Timon’ in Works (1999) 260: Each man had as much room as Porter, Blunt, / Or Harris had in Cullen’s Bushell Cunt.
[UK]Farmer Vocabula Amatoria (1966) 75: Connasse, m. 1. The female pudendum; specifically of an old woman; ‘a bushel-cunt’.
[US]Maledicta IV:2 (Winter) 184: The depucellated virgin […] becomes worthy of the denominations cow-cunted, bushel-cunted, sluice-cunted, double-cunted.