Noah Webster
Trill
TRILL, noun A quaver; a shake of the voice in singing, or of the sound of an instrument. [See Shake.]
TRILL, verb transitive To utter with a quavering or tremulousness of voice; to shake.
The sober-suited songstress trills her lay.
TRILL, verb intransitive To flow in a small stream, or in drops rapidly succeeding each other; to trickle.
And now and then an ample tear trill'd down
Her delicate cheek.
1. To shake or quaver; to play in tremulous vibrations of sound.
To judge of trilling notes and tripping feet.