[noun] dust consisting of a mixture of small coal fragments and coal dust and dirt that sifts out when coal is passed over a sieve
[noun] 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" Synonyms:slump, drop-off, falloff, falling off
[noun] a stretch of water without current or movement; "suddenly they were in slack water"
[noun] the condition of being loose (not taut); "he hadn't counted on the slackness of the rope" Synonyms:ness
[noun] a cord or rope or cable that is hanging loosely; "he took up the slack"
[verb] avoid responsibilities and work, be idle
[verb] be inattentive to, or neglect; "He slacks his attention"
[verb] release tension on; "slack the rope"
[verb] make less active or fast; "He slackened his pace as he got tired"; "Don't relax your efforts now" Synonyms:en, up, relax
[verb] make less active or intense Synonyms:slake, abate
[verb] become less in amount or intensity; "The storm abated"; "The rain let up after a few hours" Synonyms:abate, let up, off, die away
[verb] cause to heat and crumble by treatment with water; "slack lime" Synonyms:slake
[adjective] not tense or taut; "the old man's skin hung loose and gray"; "slack and wrinkled skin"; "slack sails"; "a slack rope" Synonyms:loose
[adjective] lacking in strength or firmness or resilience; "flaccid muscles"; "took his lax hand in hers"; "gave a limp handshake"; "a limp gesture as if waving away all desire to know" G.K.Chesterton; "a slack grip" Synonyms:flaccid, lax, limp
[adjective] flowing with little speed as e.g. at the turning of the tide; "slack water"
[adjective] lacking in rigor or strictness; "such lax and slipshod ways are no longer acceptable"; "lax in attending classes"; "slack in maintaining discipline" Synonyms:lax