challenge

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challenge

1. US an assertion that a person is not entitled to vote or that a vote is invalid
2. Law a formal objection to a person selected to serve on a jury (challenge to the polls) or to the whole body of jurors (challenge to the array)

challenge

[′chal·ənj]
(communications)
To cause an interrogator to transmit a signal which puts a transponder into operation.
(immunology)
Administration of an antigen to ascertain state of immunity.
References in classic literature ?
I challenge a new generation of YOUNG Americans to a season of service, to act on your idealism, by helping troubled children, keeping company with those in need, reconnecting our torn communities.
Tarzan looked downward for a moment upon the still form of his late antagonist, then he rose to his full height, swelled his deep chest, smote upon it with his clenched fist and roared out the uncanny challenge of the victorious bull ape.
When the time comes, if it ever should, that you have to say "Yes" or "No" to a challenge to fight, say "No" if you can--only take care you make it clear to yourselves why you say "No.
Yes, I had made pretty handsome progress when Sir Sagramor's challenge struck me.
We hear you, Lord of the Axe," answered one of the councillors, "but first, O Unconquered, you must on this day of the year, according to ancient custom, give public challenge to any man to fight you for the Groan-Maker and for your place as chief of the People of the Axe.
Your challenge would soon be answered,'' replied the Palmer, ``were your antagonist near you.
Bid the other Trojans and Achaeans all of them take their seats, and challenge the best man among the Achaeans to meet you in single combat.
The deep cannonade of roaring thunder belched forth its fearsome challenge.
I also detect in her a fearful elation, which I am unaware of until she has passed, when it comes back to me like a faint note of challenge.
Great apes jabbered at them and menaced them; but Tarzan answered them after their own kind, giving back taunt for taunt, insult for insult, challenge for challenge.
He saw the Negroes gather about the prostrate form and later carry it into the hut; and once he rose to his full height upon the limb where he had been squatting and raised his face to the heavens to scream out a savage protest and a challenge, for he had recognized in the brown-skinned Tarmangani the strange white ape who had come among them a night or two before in the midst of their Dum-Dum, and who by so easily mastering the greatest among them, had won the savage respect and admiration of this fierce young bull.
Then the ape-man raised his head, as he stood over the carcass of his kill, and once again through the jungle rang his wild and savage victory challenge.