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Slack   /slæk/   Listen
noun
Slack  n.  Small coal; also, coal dust; culm.



Slack  n.  A valley, or small, shallow dell. (Prov. Eng.)



Slack  n.  The part of anything that hangs loose, having no strain upon it; as, the slack of a rope or of a sail.



adjective
Slack  adj.  (compar. slacker; superl. slackest)  
1.
Lax; not tense; not hard drawn; not firmly extended; as, a slack rope.
2.
Weak; not holding fast; as, a slack hand.
3.
Remiss; backward; not using due diligence or care; not earnest or eager; as, slack in duty or service. "The Lord is not slack concerning his promise, as some men count slackness."
4.
Not violent, rapid, or pressing; slow; moderate; easy; as, business is slack. "With slack pace."
Slack in stays (Naut.), slow in going about, as a ship.
Slack water, the time when the tide runs slowly, or the water is at rest; or the interval between the flux and reflux of the tide.
Slack-water navigation, navigation in a stream the depth of which has been increased, and the current diminished, by a dam or dams.
Synonyms: Loose; relaxed; weak; remiss; backward; abated; diminished; inactive; slow; tardy; dull.



verb
Slacken, Slack  v. t.  
1.
To render slack; to make less tense or firm; as, to slack a rope; to slacken a bandage.
2.
To neglect; to be remiss in. (Obs.) "Slack not the pressage."
3.
To deprive of cohesion by combining chemically with water; to slake; as, to slack lime.
4.
To cause to become less eager; to repress; to make slow or less rapid; to retard; as, to slacken pursuit; to slacken industry. "Rancor for to slack." "I should be grieved, young prince, to think my presence Unbent your thoughts, and slackened 'em to arms." "In this business of growing rich, poor men should slack their pace." "With such delay Well plased, they slack their course."
5.
To cause to become less intense; to mitigate; to abate; to ease. "To respite, or deceive, or slack thy pain Of this ill mansion."
Air-slacked lime, lime slacked by exposure to the air, in consequence of the absorption of carton dioxide and water, by which it is converted into carbonate of lime and hydrate of lime.



Slacken, Slack  v. i.  (past & past part. slacked, slackened; pres. part. slacking, slackening)  
1.
To become slack; to be made less tense, firm, or rigid; to decrease in tension; as, a wet cord slackens in dry weather.
2.
To be remiss or backward; to be negligent.
3.
To lose cohesion or solidity by a chemical combination with water; to slake; as, lime slacks.
4.
To abate; to become less violent. "Whence these raging fires Will slacken, if his breath stir not their flames."
5.
To lose rapidity; to become more slow; as, a current of water slackens.
6.
To languish; to fail; to flag.
7.
To end; to cease; to desist; to slake. (Obs.) "That through your death your lineage should slack." "They will not of that firste purpose slack."



adverb
Slack  adv.  Slackly; as, slack dried hops.






Collaborative International Dictionary of English 0.48








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"Slack" Quotes from Famous Books



... discourse cool your charity; lest, seeing the souls enjoy so much comfort in Purgatory, your compassion for them grow slack, and so continue not equal to their desert. Remember, then, that notwithstanding all these comforts here rehearsed, the poor creatures cease not to be grievously tormented; and consequently have extreme need ...
— Purgatory • Mary Anne Madden Sadlier

... where we met our coal-ship, and took in a little coal for emergency, liquid air being our proper motor; also forty-three dogs, four reindeer, and a quantity of reindeer-moss; and two days later we turned our bows finally northward and eastward, passing through heavy 'slack' ice under sail and liquid air in crisp weather, till, on the 27th August, we lay moored to a floe off the desolate ...
— The Purple Cloud • M.P. Shiel

... the draw, it was lifted for the Speed, she had passed, and the wind was in her sail once more. Yet, somehow, she hung back. And then I saw that the men in her were of those with whom Mr. Gabriel had spoken at noon. Dan's sail fell slack, and we drifted slowly through, while he poled us along with ...
— Atlantic Monthly, Vol. 9, No. 56, June, 1862 • Various

... well, and very evil indeed, when he silently laid a photograph on the paper—the photograph of a girl with a curly head, and a foolish slack mouth. ...
— The Works of Rudyard Kipling One Volume Edition • Rudyard Kipling

... judicious manipulation of the regulating cord, when a sudden puff of wind should tend to send the kite soaring upwards with six or eight horse-power into the sky. To Ivitchuk was assigned the easy task of gathering in the "slack" and holding on to Alf if a sudden jerk should threaten to pull him overboard. Anders ...
— The Giant of the North - Pokings Round the Pole • R.M. Ballantyne


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