Green’s Dictionary of Slang

1. the vagina.

1594		Gesta Grayorum (1688) 66: Known to have born nine hundred fighting Men in her Poup.
1611		Davies of Hereford Scourge of Folly 139: Phrina (hot whoore) takes Pepper in the Nose, Because her Noses Pimples some call Poxes, Wherewith she peppers both her friends and foes; So, makes her Nose and Poope, two Pepper-boxes.
1624		Massinger Parliament of Love IV v: I am a swabber doctor, A bloodlesse swabber, haue not the strength enough To clense her poope.
1654		Mercurius Fumigosus 6 5 July 44: One of them [...] had a Leake sprung in her poop, which came by a shot of a French man of Warre.
1680		‘Cabal’ in Lord Poems on Affairs of State (1965) II 335: The Earl whose spouse had such a spacious poop / As swallow’d up Ned Brab’zon and his troop.
1961		T.I. Rubin In the Life 104: I met an educated hustler here, there. Got the same dough and the same Johns and [...] the same ‘up the poop’ like us dumb babes.
1992		(con. 1910s) F.M. Davis Livin’ the Blues 37: A male with a small penis was ‘too little in the poop’.

2. the ‘dickey’ or rear seat of a coach.

c.1609		Fletcher Wit at Several Weapons IV i: If you [...] meet a footman by the way, in orange-tawny ribbands, running before an empty coach, with a buzzard [the bare-headed lackey] i’ th’ poop on’t.
c.1645		J. Howell letter in Epistolæ Ho-Elianæ (1907) 163: She took a mouthfull of claret, and spouted it into the poope of the hollow bird.

3. the buttocks, the anus.

1611		Davies of Hereford Scourge of Folly 10: When old men quaffing still are seene [...] when olde Vessells still, wine-fraught, do saile, Their Poopes will leake and loose be at the Taile.
1661		H. Nevile Newes from the New-Exchange 2: This is a Lady indeed, that seaven years since took sayle with Presbytery, being chargd in the Fore-deck by Master Hollis, in the Poop by Master Pim, whilst she clapt my Lord of Holland under hatches.
1664		C. Cotton Virgil Travestie (1765) Bk IV 132: The Devil sure farts in his Poop.
1705–07		N. Ward Hudibras Redivivus II:6 15: Thus the tremendious awful Troop, / Each Gennet’s Nose in t’other’s Poop.
1720		in D’Urfey Pills to Purge Melancholy VI 67: His Tail his Ensign he did make, / Which he would oft display and shake, / Fast in his Poop uprear’d.
1928		M. Bodenheim Georgie May 33: Gwine git me a man who don’ know when tuh stop—you’s too weak in the poop fo’ me!
1935		J. Conroy World to Win 72: He’s a mite light in the poop.
1956		H. Gold Man Who Was Not With It (1965) 14: Chet Hayworth accused his brother, Poopface, of having eyes for Roly.
1961		T.I. Rubin In the Life 146: Stow it, stow it up your poop. [...] Shove the next session. Shove it. Shove it up the warden’s poop!
1969		M. Puzo Godfather 182: You have to show these Hollywood broads that my paisan buddy ain’t weak in the poop.