Other forms: trills, trilling, trilled
To trill is to sing with a rapid quivering of notes. The bird trilled, a trilled note, trilling voice.
In music a trill is an exact ornament — a fast alternation between a note and the one above it — and it is written with a small tr over the note. In phonetics a trilled r is one made by vibrating the tongue, as in Spanish. Note that the word came from Italian.
1verbtrillTo sing with a rapid quivering of notes.
“A blackbird trilled from the top of the garden fence.”
trill is a sound.
Italian trillare means to quaver, made from the sound. Music took the term from Italian along with most of its vocabulary.
Italian
trillo
Middle English
trillen
English, today
trill
From Middle English trillen, from Italian trillo, trillare. Compare German trillern, Norwegian trille, Swedish trilla.
Etymology from Wiktionary, CC BY-SA