Green’s Dictionary of Slang

the penis.

1638		Rowley Shoo-Maker, A Gentleman Act IV: I’faith, is your Aul so free for smockeleather?
1654		New Brawle 12: You can remember [...] that the Cobler’s Boy thrust his Aule in your Buttocks.
1673		J. Wade Vinegar and Mustard B: He was thrust up his Aul into her blind creek, (with a Pox to her) and when you was prickt, her [i.e. she] was give such a kick upward, that her was threw the fellow out of the saddle all along in the dirt.
1685–8		‘Directions for Damosels’ in Chappell Roxburghe Ballads II (1874) 108: If to their will you comply, they’l pack up their Awls and away.
c.1690		‘Seven Merry Wives of London’ in Pepys Ballads (1987) V 413: My Husband is lusty, young, proper, and tall, Yet I think that he has but a short Peging-aul, Which does nothing to purpose.
1834		‘The Whimisical Maid’ in Randy Songster in Spedding & Watt (eds) I 196: I shouldn’t have not half enough, / If I even had your awl!
1842		Whip & Satirist of NY & Brooklyn (NY) 17 Dec. n.p.: Some very excellent toasts were given, among which [...] ‘May his awl never want waxing’.