Green’s Dictionary of Slang

1. the penis; thus auger-hole, the vagina, auger-man, a male copulator.

1694		Comforts of Whoreing 38: Many brave Gentlemen Ruined by Cramming their Gimblets, into so Insatiate an Augre-Hole.
1900		‘Boring For Oil’ in G. Logsdon Whorehouse Bells Were Ringing (1995) 162: She lifted her garments in fear they might soil, / And she showed me the place to go boring for oil; / My feelings did tremble, my blood it did boil / As I pulled out my auger to go boring for oil.
1936		B. Carter ‘All Around Man’ 🎵 I can bore your hole till the auger-man come.
1937		Lee Brown ‘Carpenter Man Blues’ 🎵 My auger is gettin’ hot baby, and I’m gonna let you feel the end / As soon as it cool off a little bit, mama, I’m gonna start out borin’ again.
a.1969		‘The Mormon Cowboy’ in G. Logsdon Whorehouse Bells Were Ringing (1995) 40: He wallowed me, and he tumbled me, till he made my limbs all sore, / And to my sad misfortune, his auger wouldn’t bore.

2. (US campus) an excessively hard worker.

1982

W. Safire What’s The Good Word? 302: A ‘tool’ or ‘grind’ is somtimes called [...] an ‘auger’ — a boring tool.