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Back up   /bæk əp/   Listen
verb
Back  v. t.  (past & past part. backed; pres. part. backing)  
1.
To get upon the back of; to mount. "I will back him (a horse) straight."
2.
To place or seat upon the back. (R.) "Great Jupiter, upon his eagle backed, Appeared to me."
3.
To drive or force backward; to cause to retreat or recede; as, to back oxen.
4.
To make a back for; to furnish with a back; as, to back books.
5.
To adjoin behind; to be at the back of. "A garden... with a vineyard backed." "The chalk cliffs which back the beach."
6.
To write upon the back of; as, to back a letter; to indorse; as, to back a note or legal document.
7.
To support; to maintain; to second or strengthen by aid or influence; as, to back a friend. "The Parliament would be backed by the people." "Have still found it necessary to back and fortify their laws with rewards and punishments." "The mate backed the captain manfully."
8.
To bet on the success of; as, to back a race horse.
To back an anchor (Naut.), to lay down a small anchor ahead of a large one, the cable of the small one being fastened to the crown of the large one.
To back the field, in horse racing, to bet against a particular horse or horses, that some one of all the other horses, collectively designated "the field", will win.
To back the oars, to row backward with the oars.
To back a rope, to put on a preventer.
To back the sails, to arrange them so as to cause the ship to move astern.
To back up, to support; to sustain; as, to back up one's friends.
To back a warrant (Law), is for a justice of the peace, in the county where the warrant is to be executed, to sign or indorse a warrant, issued in another county, to apprehend an offender.
To back water (Naut.), to reverse the action of the oars, paddles, or propeller, so as to force the boat or ship backward.


back up  v. t.  
1.
To serve as a backup (3) for (another person or persons); as, the patrolmen backed up the detectives as they went inside to make the arrest; the center fielder backed up the shortstop on the play.
2.
(Computers) To make a backup (5) of; as, the sysop backed up the purchasing data files every night.


back up  v. i.  
1.
To move in a reverse direction; used of vehicles or animals.
2.
To accumulate due to a blockage of flow; as, a traffic backup due to an accident; a sewage backup.





Collaborative International Dictionary of English 0.48


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"Back up" Quotes from Famous Books



... each other for a half minute or so. It was a look of the utmost friendliness, and then the squirrel went noiselessly back up the tree. It was a good omen, thought Henry, but he still waited with the illimitable patience which is a necessity of the wild. He saw the fire, before which the white men and the chiefs lay sleeping, sink lower and lower. The night remained dark. The heavy ...
— The Keepers of the Trail - A Story of the Great Woods • Joseph A. Altsheler
... turned up as a major in khaki, and said something so rude to his brother-in-law, who was sitting in the corner with Funkelstein, that the latter turned pale and left the room hurriedly. It appeared afterwards that Jack had got his back up against "that blighter Gilbert" because he hadn't done a thing for Dick, who had been at Sandhurst, and was now with his regiment in France. "It wasn't as though the selfish swine had kids of his own ...
— War-time Silhouettes • Stephen Hudson
... likely ter, an' that's facts. Oh, we'll back up ther Hermit, an' thar won't be no trouble 'bout gittin' erway, 'less them varmints behind manages ter hit one o' ...
— Frank Merriwell's Bravery • Burt L. Standish
... take the cover from a box. Sandy stretched himself and yawned—after the fashion of any one who has been sleeping a long time in a cramped position; and without being in the least conscious of it, he sidled up to the arm of the throne and rubbed his back up and down—to test ...
— The Primrose Ring • Ruth Sawyer
... and a sudden suspicion flashed into his eyes, which caused Buck promptly to relinquish all hope of getting any further information from the boy. Evidently he had said the wrong thing and got the fellow's back up, though he could not imagine how. And so, when Jessup curtly proposed that they return to ...
— Shoe-Bar Stratton • Joseph Bushnell Ames


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