metronome (noun)

1. In the novel, the protagonist used a metronome to keep time while composing his masterpiece.

2. In the futuristic world of the science fiction novel, musicians relied on advanced metronomes that emitted laser beams to indicate precise tempo.

3. The latest fashion trend among musicians is wearable metronomes that can be disguised as stylish bracelets.

4. In the comic strip, the metronome character helped the other characters keep rhythm while practicing their music.