Definition of "pass out"

At the end of the presentations, the whole folk scene joined hands and sang We Shall Overcome so many times that everybody passed out.

1965 December, Phil Ochs, “That Was The Year That Weren't”, in Cavalier

He wasn't allowed to finish his training to go to France; but was sent to England on a Physical Training Course and passed out First Class.

1974, GB Edwards, The Book of Ebenezer Le Page, New York, published 2007, page 113

"She had asked at Paddington for a return to Lympstone on the Exmouth branch, where her son was due to pass out as a Royal Marine that afternoon, at the local training camp."Presumably, the booking clerk had misheard her and sold her a ticket to Leominster, and other helpful staff had unwittingly helped her on her way.

2022 July 13, “Stop & Examine”, in RAIL, number 961, page 71

"It took me about a month to pass out on this box," he adds. "It's easy to be daunted by all the levers and bell codes and Absolute Block, but it's all the usual rules of anywhere else. You can't just come up here from the street though, and I thought I'd never be able to work this SB [signal box], but you just get on with it until it becomes second nature."

2018, Rail, issue 857, July 18-July 31, article on Severn Bridge Junction signal box at Shrewsbury

“You speak of terms,” she said. “These are mine. Stand aside and let me pass.” […] “So you accede to my terms?” she said. “I am to pass out?”

1882, James Jackson, Tom Terror, the Outlaw‎