cool jazz

noun
  1. a restrained, fluid modern-jazz style of the 1950s, marked by intricate harmonic structures, de-emphasized dynamics, and carefully controlled phrasing and ensemble playing, often with a slight lagging behind the beat.Also called West Coast jazz.Compare bop1, hard bop, modern jazz, progressive jazz.

Origin of cool jazz

First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018