名詞 metronome:

1. clicking pendulum indicates the exact tempo of a piece of music

met.ro.nome

n.Music （名詞）【音樂】
A device used to mark time by means of regularly recurring ticks or flashes at adjustable intervals.
節(jié)拍器：一種利用間隙可調(diào)的有規(guī)律地重復(fù)出現(xiàn)的拍打或閃光來標記時間的儀器

來源：
Greek metron [measure] * see mô- 2
希臘語 metron [測量] *參見 mô- 2
Greek nomos [rule, division] * see nem-
希臘語 nomos [規(guī)則，區(qū)分] *參見 nem-