sharpen

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sharpen

[′shär·pən]
(engineering)
To give a thin keen edge or a sharp acute point to.
(graphic arts)
To decrease the size of the dots on a screened halftone.
References in classic literature ?
The soldiers' swords are sharpened there," said Mr.
For an instant Tantor, the elephant, paused with upraised trunk and tail, with great ears up-pricked, and then he swung on along the trail at a rapid, shuffling pace--straight toward the covered pit with its sharpened stakes upstanding in the ground.
A few more steps would precipitate Tantor upon the sharpened stakes;
Backward and downward he went toward the sharpened stakes in the bottom of the pit.
He was seized by the chief of this region, fastened to the foot of a baobab, and the ferocious black then severed all his joints while the war-song of his tribe was chanted; he then made a gash in the prisoner's neck, stopped to sharpen his knife, and fairly tore away the poor wretch's head before it had been cut from the body.
And on the eighteenth, when that dividend was declared, he chuckled at the confusion that would inevitably descend upon the men with the sharpened shears waiting to trim him--him, Burning Daylight.
The bit of wood which formed this neck was also sharpened at the upper end, and when all was ready Tip put on the pumpkin head, pressing it well down onto the neck, and found that it fitted very well.
As for the tribe itself, it had been content to announce to Montcalm, through his emissaries, with Indian brevity, that their hatchets were dull, and time was necessary to sharpen them.
Why should they brighten their tomahawks and sharpen their knives against each other?
The ordinary lion pit with which Tarzan was familiar had stakes imbedded in the bottom, upon whose sharpened points the hapless lion would be impaled, but this pit was not so made.
The baron took an old hunting-knife from a cupboard hard by, and having sharpened it on his boot, made what boys call "an offer" at his throat.
'The baron sharpened it again, and made another offer, when his hand was arrested by a loud screaming among the young barons and baronesses, who had a nursery in an upstairs tower with iron bars outside the window, to prevent their tumbling out into the moat.