trill
noun
[ trɪl ]
• a quavering or vibratory sound, especially a rapid alternation of sung or played notes.
• "the caged bird launched into a piercing trill"
trill
verb
• produce a quavering or warbling sound.
• "a skylark was trilling overhead"
Origin:
mid 17th century: from Italian trillo (noun), trillare (verb).
