A variation in the volume of a note or a chord, evoking a tremor or quiver.
The device in an organ that produces a tremolo effect.
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).
The sound of a bird; any short high-pitched sound or whistle.
An entry posted on the microblogging service Twitter.
The sound of a bird twittering.
To make a short high-pitched sound, like that of certain birds.
To post an update to Twitter.