Slack

1. n. The part of anything that hangs loose, having no strain upon it; as, the slack of a rope or of a sail.
2. n. Small coal; also, coal dust; culm.
3. n. A valley, or small, shallow dell.
4. superl. Lax; not tense; not hard drawn; not firmly extended; as, a slack rope.
5. superl. Weak; not holding fast; as, a slack hand.
6. superl. Remiss; backward; not using due diligence or care; not earnest or eager; as, slack in duty or service.
7. superl. Not violent, rapid, or pressing; slow; moderate; easy; as, business is slack.
8. adv. Slackly; as, slack dried hops.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.