Definition: a note that alternates rapidly with another note a semitone above it
Main entry: trill
Definition: the articulation of a consonant (especially the consonant `r') with a rapid flutter of the tongue against the palate or uvula
Usage: he pronounced his R's with a distinct trill
Main entry: warble, quaver, trill
Definition: sing or play with trills, alternating with the half note above or below
Main entry: trill
Definition: pronounce with a trill, of the phoneme `r'
Usage: Some speakers trill their r's