an individual or group that defeats a more powerful opponent
She drew a low chair to the fireside, took Tommy on her lap, and began to tell him the story of Jack the giant-killer.
Am I not as big as Jack now, and as fit to play the giant-killer as he?
We had done it fairly, too, with none of those Jack the giant-killer tricks my grandfather accused us of.
Galligantua, the wizard giant slain by Jack the giant-killer.
And that reminds me that her husband, the gruff old giant-killer, wants a hammer.
I was not the giant-killer; the hour had come, but not the man.
And he must have got Jack the giant-killer's cloak of darkness for his dress, so that you did not see him.
Now Jack the giant-killer, coming that way, was so taken with the generosity of the Prince, that he desired to be his servant.
While he walks, like Jack the giant-killer, in a coat of darkness, he may do much mischief with little strength.
All these experiments in dramatic literature, from Jack the giant-killer on, were training the future story-teller.