doublenote
nounUK /ˈdʌbəl nəʊt/
US /ˈdʌbəl noʊt/
A doublenote is when you play two notes at the same time on a musical instrument.
The piano player hit a doublenote to make the song sound fuller.
OTHER MEANINGS
2. A written symbol or mark that stands for two musical notes joined together.
The teacher pointed to the doublenote on the sheet music.
3. A quick two-tone sound made by a device, like a phone or doorbell.
The phone gave a doublenote to signal a new message.
4. A pair of notes played one after the other very fast.
He ended the tune with a cheerful doublenote.