Tremolo
WordNet
noun
(1) Vocal vibrato especially an excessive or poorly controlled one
(2) (music) a tremulous effect produced by rapid repetition of a single tone or rapid alternation of two tones
WiktionaryText
Etymology
Borrowed from , first-person present indicative of . Origin: 1715-25.
Noun
- A rapid repetition of the same note, or an alternation between two or more notes. It can also be intended to mean a rapid and repetitive variation in pitch for the duration of a note. It is notated by a strong diagonal bar across the note stem, or a detached bar for a set of notes (or stemless notes).