Places

• Slack, West Yorkshire, a village in Calderdale
  Calderdale
  The Metropolitan Borough of Calderdale is a metropolitan borough of West Yorkshire, England, through which the upper part of the River Calder flows, and from which it takes its name...
  
  , England.
• Slack River
  Slack River
  The Slack is a 22 km long river in the Pas-de-Calais department, in northern France.It rises at Hermelinghen on Mount Binôt, flows through Rinxent, Marquise, Beuvrequen, Slack and flows into the English Channel in Ambleteuse....
  
   in Pas-de-Calais, northern France
• Slacks Creek, Queensland
  Slacks Creek, Queensland
  Slacks Creek is a suburb of Logan City, Queensland, Australia.The creek that gave its name to the district was named after the Slack family who had a cattle run there before the days of closer settlement. The Aboriginal name for it was Mungaree, place of fishes, which is the name they gave to their...
  
  , a suburb of Logan City
  Logan City, Queensland
  Logan City is a Local Government Area in South East Queensland, Australia. The city is situated between the City of Brisbane to the north and Gold Coast to the south. The city also borders the Scenic Rim, the City of Ipswich and Redland City....
  
  , Queensland
  Queensland
  Queensland is a state of Australia, occupying the north-eastern section of the mainland continent. It is bordered by the Northern Territory, South Australia and New South Wales to the west, south-west and south respectively. To the east, Queensland is bordered by the Coral Sea and Pacific Ocean...
  
  , Australia
  Australia
  Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...
  
  

Other

• Charlie Slack
  Charlie Slack
  Charles E. "Charlie" Slack is an American former college basketball standout from the Marshall University. He holds the National Collegiate Athletic Association  Division I record for the highest single-season rebound average when he grabbed 25.6 rpg in 1954–55.Considered the greatest...
  
  , American basketball player
• Slack (project management), a term used in project management
• The central belief of the Church of the SubGenius
• Small pieces of low-grade bituminous coal
  Bituminous coal
  Bituminous coal or black coal is a relatively soft coal containing a tarlike substance called bitumen. It is of higher quality than lignite coal but of poorer quality than Anthracite...
  
  .
• Slackness
  Slackness
  Slackness refers to vulgarity in West Indian culture, behavior and the music. It also refers to a subgenre of dancehall music with straightforward sexual lyrics performed live or recorded. Its form and pronunciation varies throughout the Caribbean....
  
  , lyrics of a crude or bawdy nature in dancehall
  Dancehall
  Dancehall is a genre of Jamaican popular music that originated in the late 1970s. Initially dancehall was a more sparse version of reggae than the roots style, which had dominated much of the 1970s. In the mid-1980s, digital instrumentation became more prevalent, changing the sound considerably,...
  
   music are often called "slack".
• Slacks, a synonym for trousers
  Trousers
  Trousers are an item of clothing worn on the lower part of the body from the waist to the ankles, covering both legs separately...
  
  
• File slack, a kind of internal fragmentation
  Fragmentation (computer)
  In computer storage, fragmentation is a phenomenon in which storage space is used inefficiently, reducing storage capacity and in most cases reducing the performance. The term is also used to denote the wasted space itself....
  
  
• The valley or trough between dune
  Dune
  In physical geography, a dune is a hill of sand built by wind. Dunes occur in different forms and sizes, formed by interaction with the wind. Most kinds of dunes are longer on the windward side where the sand is pushed up the dune and have a shorter "slip face" in the lee of the wind...
  
  s.
• Slack variable
  Slack variable
  In an optimization problem, a slack variable is a variable that is added to an inequality constraint to transform it to an equality. Introducing a slack variable replaces an inequality constraint with an equality constraint and a nonnegativity constraint....
  
  , a mathematical concept.

• Slacks
  Slacks
  Slacks is a colloquial term referring to trousers. However, it could also refer to:*Donovan Slacks, leader of a militant fishermen's uprising in 1920s Britain*Slacks Creek, Queensland, a suburb of Logan City , Queensland , Australia ....
  
  
• Slacker
  Slacker
  The term "slacker" is used to refer to a person who habitually avoids work. Slackers may be regarded as belonging to an antimaterialistic counterculture, though in some cases their behavior may be due to other causes ....
  
  
• Slackware
  Slackware
  Slackware is a free and open source Linux-based operating system. It was one of the earliest operating systems to be built on top of the Linux kernel and is the oldest currently being maintained. Slackware was created by Patrick Volkerding of Slackware Linux, Inc. in 1993...
  
  linux distribution