a close-knit group of people with common interests who participate in various professional and recreational activities together.
Chiefly British. journalists or photographers as a group in relentless pursuit of celebrities.
What Is Hypocatastasis?Hypocatastasis packs more of a punch than a metaphor because it uses only one noun, (the other noun is implied), while a metaphor uses two nouns.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Word Origin and History for rat-pack
Online Etymology Dictionary, © 2010 Douglas Harper