trill

A rapid alternation between an indicated note and the one above it, in musical notation usually indicated with the letters tr written above the staff.

A type of consonantal sound that is produced by vibrations of the tongue against the place of articulation: for example, Spanish rr.

A tremulous high-pitched vocal sound produced by cats.

To create a trill sound; to utter trills or a trill; to play or sing in tremulous vibrations of sound; to have a trembling sound; to quaver.

To impart the quality of a trill to; to utter as, or with, a trill.

“to trill a note, or the letter r”

To trickle.

To twirl.