Wiktionary
vb. (context chiefly US idiomatic English) To recognize that one has been shown to be mistaken or outdone, especially by admitting that one has made a humiliating error.
Usage examples of "eat crow".
He had to eat crow in front of the whole Council, relentlessly driven by his anal-retentive sense of duty and honor.
It is an old country notion that if crows eat Crow Garlic, itstupefies them.
If I don't know how to apologize, grovel, and eat crow, it's because it's rarely appropriate for me to do so.
Fred Hoyle, Steady State's chief proponent, had to publicly eat crow.
So at least I didn't have to eat crow in public, though I did have to take steps to hide my disappointment when--after a quick two days in the only house I'd ever known well --I had to set off for one I dreaded.
Within a week their precious Son of Heaven was going to be brought face to face with the Big Barbarian, who'd make him eat crow and like it.
So she stood in front of his cottage door as the light dimmed with dusk, and prepared to eat crow.