2. trill a similar quavering sound, as that made by a bird or a person laughing.
3. trill a sequence of rapid vibratory movements produced in a speech organ, as the tongue or uvula, by air from the lungs, causing a corresponding sequence of contacts between the vibrating articulator and another surface.
3. (verb)trill pronounce with a trill, of the phoneme `r' "Some speakers trill their r's"
4. (verb)warble, trill, quaver sing or play with trills, alternating with the halfnoteabove or below
Definition of 'Trill'
Webster Dictionary
1. (noun)Trill a sound, of consonantal character, made with a rapidsuccession of partial or entire intermissions, by the vibration of some one part of the organs in the mouth -- tongue, uvula, epiglottis, or lip -- against another part; as, the r is a trill in most languages
2. (noun)Trill the action of the organs in producing such sounds; as, to give a trill to the tongue. d
3. (noun)Trill a shake or quaver of the voice in singing, or of the sound of an instrument, produced by the rapid alternation of two contiguous tones of the scale; as, to give a trill on the high C. See Shake
4. (verb)Trill to flow in a small stream, or in drops rapidly succeeding each other; to trickle
5. (verb)Trill to turn round; to twirl
6. (verb)Trill to impart the quality of a trill to; to utter as, or with, a trill; as, to trill the r; to trill a note
7. (verb)Trill to utter trills or a trill; to play or sing in tremulous vibrations of sound; to have a trembling sound; to quaver
Definitions of Trill 
