come within an ace of

come within an ace of something

to come very close to [doing] something. I came within an ace of leaving school. I'm glad you talked me out of it. Donna came within an ace of having an accident.
See also: ace, come, of, within

come within an ace of something/doing something

to almost achieve something Linford Christie came within an ace of the world indoor record for the 100m last night.
See also: ace, come, of, within
References in classic literature ?
It was Sir Madok de la Montaine, a burly great fellow whose chief distinc- tion was that he had come within an ace of sending Sir Launcelot down over his horse-tail once.