trill
nounUK /trɪl/
US /trɪl/
A trill is a quick, shaking sound that goes up and down.
The bird sang a sweet trill in the morning.
OTHER MEANINGS
2. To sing or play with a quick shaking sound.
She trilled a happy tune as she walked.
3. A speech sound made by vibrating the tongue or throat.
In Spanish, the letter r is often pronounced as a trill.
4. A quick shaking movement of the voice or an instrument.
The flute player added a trill at the end of the note.