1.Definition: a cord or rope or cable that is hanging loosely
"He took up the slack"Category: Objects
2.Definition: a noticeable deterioration in performance or quality
"The team went into a slump", "A gradual slack in output", "A drop-off in attendance", "A falloff in quality"
3.Definition: a soft wet area of low-lying land that sinks underfoot
4.Definition: a stretch of water without current or movement
"Suddenly they were in a slack and the water was motionless"Category: Objects
5.Definition: dust consisting of a mixture of small coal fragments and coal dust and dirt that sifts out when coal is passed over a sieveCategory: General
6.Definition: the quality of being loose (not taut)
"He hadn't counted on the slackness of the rope"
Related Noun(s):slacknessCategory: General