Metronome (noun)

1. A device that marks time at a selected rate by giving a regular tick.
2. A device used in music to regulate the tempo of a piece by producing a steady pulse.

Origin:

The word 'metronome' comes from the greek words 'metron' meaning 'measure' and 'nomos' meaning 'law.' the word has been in use since the late 18th century.

Examples:

1. The metronome is an essential tool for musicians to keep a steady beat.
2. The metronome is adjustable, so you can set it to the desired tempo.
3. He used a metronome to keep the rhythm of the song consistent.
4. The metronome helps musicians maintain a consistent tempo while playing.
5. A metronome is a useful tool for beginner musicians to develop a sense of timing.