to be fortunate; to strike it lucky. I really lucked out when I ordered the duck. It's excellent.I didn't luck out at all. I rarely make the right choice.
Also, luck into. Gain success or something desirable through good fortune. For example, We lucked out and found the same rug for half the price, or Nell and Dave lucked into a terrific apartment. [Colloquial; mid-1900s]