register key

American  

[rej-uh-ster kee] / ˈrɛdʒ ə stər ˈki /

noun

plural

register keys

1. Music. a lever on a wind instrument that, when pressed, shifts the note being played up in pitch.

---

Example Sentences

It’s equipped with optical mechanical switches that can theoretically register key presses far faster than their traditional mechanical counterparts.

From The Verge

“Do you have the cash register key?” the friend says.

From Washington Post

The video shows a man in a red shirt assaulting one of the owners and then pounding on the register key.

From Washington Post