Meaning of SLACK in English
1》 not taut or held tightly in position; loose.
2》 (of business or trade) not busy; quiet.
3》 careless, lazy, or negligent.
4》 W. Indian lewd or promiscuous.
5》 (of a tide) neither ebbing nor flowing.
1》 the part of a rope or line which is not held taut.
2》 ( ~s ) casual trousers.
3》 informal a period of inactivity or laziness.
1》 loosen (something, especially a rope).
2》 ( ~ off/up ) decrease in intensity or speed.
3》 Brit. informal work slowly or lazily.
4》 slake (lime).
cut someone some ~ N. Amer. informal allow someone some leeway in their conduct.
take (or pick ) up the ~ improve the use of resources to avoid an undesirable lull in business.
OE slæc 'inclined to be lazy, unhurried', of Gmc origin.
■ noun coal dust or small pieces of coal.
ME: prob. from Low Ger. or Du.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004