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rat pack

noun Slang.
  1. a close-knit group of people with common interests who participate in various professional and recreational activities together.
  2. Chiefly British. journalists or photographers as a group in relentless pursuit of celebrities.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for rat-pack

n.

"juvenile gang," 1951, from rat (n.) + pack (n.). In reference to a Hollywood circle around Frank Sinatra, from 1958.

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Online Etymology Dictionary, © 2010 Douglas Harper