|1.||[ noun ] (music) a note that alternates rapidly with another note a semitone above it|
|Related terms:||note warble|
|2.||[ verb ] (phonetics) pronounce with a trill, of the phoneme 'r'|
"Some speakers trill their r's"
|3.||[ verb ] (music) sing or play with trills, alternating with the half note above or below|
|Related terms:||sing eighth_note|