pedal-note

noun

ped·​al-note ˈpe-dᵊl-ˌnōt 

1

: pedal point

2

: one of the lowest tones that can be sounded on a brass instrument being an octave below the normal usable range and representing the fundamental of the harmonic series

Word History

Etymology

from the playing of the lowest notes on the organ by means of pedals

First Known Use

circa 1828, in the meaning defined at sense 1