rhythm section

noun Music.

band instruments, as drums or bass, that supply rhythm rather than harmony or melody.
the group of players in a band who play such instruments.

Origin of rhythm section

First recorded in 1925–30

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for rhythm section

rhythm section

noun

those instruments in a band or group (usually piano, double bass, and drums) whose prime function is to supply the rhythm

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012