key

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key

adjective critical, crucial, decisive, fateful, influential, major, momentous, significant, weighty

key

(Passport), noun bar, pass, permit, ticket

key

(Solution), noun answer, method, resolution, way
See also: answer, basic, cardinal, catchword, central, clue, cornerstone, critical, crucial, essential, explanation, fundamental, gravamen, important, indispensable, main point, major, material, necessary, outstanding, primary, solution, strategic, tip

KEY. An instrument made for shutting and opening a lock.
     2. The keys of a house are considered as real estate, and descend to the heir with the inheritance. But see 5 Blackf. 417.
     3. When the keys of a warehouse are delivered to a purchaser of goods locked up there, with a view of effecting a delivery of such goods, the delivery is complete. The doctrine of the civil law is the same. Dig. lib. 41, t. 1, 1. 9, Sec. 6; and lib. 18, t. 1, 1. 74.

KEY, estates. A wharf at which to land goods from, or to load them in a vessel. This word is now generally spelled Quay, from the French, quai.

References in classic literature ?
In a very little while there was no longer any doubt that Peter Featherstone was dead, with his right hand clasping the keys, and his left hand lying on the heap of notes and gold.
There was, therefore, only a little to be done to this key.
She waited a little, after Admiral Bartram's departure, before she ventured on trying her experiment with the keys.
Now, mistress," says the lawyer, tapping the key hastily upon the chimney-piece.
You had better let me have the key then,' says Durdles.
He called to Samuel, through the window, to take his portmanteau up-stairs again, and he then put the key himself into Sergeant Cuff's hand.
The key of my desk, in fact, was at that moment in the lock, and the others were attached to it.
I tried it, for, since I could not find the key of the room or the key of the outer door, which was the main object of my search, I must make further examination, or all my efforts would be in vain.
If that key never left Mademoiselle Stangerson, the murderer must have waited for her in her room for the purpose of stealing it; and the robbery could not have been committed until after the attack had been made on her.
He rose and moved cautiously toward the opposite end of the table where lay the coveted key.
He had managed to coax old Brus, the gardener, into letting him have the key to the little postern gate on the plea that he wished to indulge in a midnight escapade, hinting broadly of a fair lady who was to be the partner of his adventure, and, what was more to the point with Brus, at the same time slipping a couple of golden zecchins into the gardener's palm.
Rushworth wished he had brought the key; he had been very near thinking whether he should not bring the key; he was determined he would never come without the key again; but still this did not remove the present evil.