ˈtreməˌlō noun
( -s )
Usage: often attributive
Etymology: Italian, from tremolo tremulous, from Latin tremulus
1.
a. : the rapid reiteration of a musical tone or of alternating tones of a chord so as to produce a tremulous effect
b. : a perceptible rapid variation of pitch in the voice especially in singing similar to the vibrato of a stringed instrument
2. or tremolo stop : a mechanical contrivance in an organ for periodically interrupting the flow of tone and causing a tremulous effect