,| 1. | to sing or play with a vibratory or quavering effect. |
| 2. | Phonetics. to produce (a sound) with a trill. |
| 3. | (of birds, insects, etc.) to sing or utter in a succession of rapidly alternating sounds. |
| 4. | to resound vibrantly, or with a rapid succession of sounds, as the voice, song, or laughter. |
| 5. | to utter or make a sound or succession of sounds resembling such singing, as a bird, frog, grasshopper, or person laughing. |
| 6. | to execute a shake or trill with the voice or on a musical instrument. |
| 7. | Phonetics. to execute a trill, esp. with the tongue, as while singing, talking, or whistling. |
| 8. | the act or sound of trilling. |
| 9. | Music. a rapid alternation of two adjacent tones; a shake. |
| 10. | a similar sound, or succession of sounds, uttered or made by a bird, an insect, a person laughing, etc. |
| 11. | Phonetics.
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Archaic.| 1. | to flow in a thin stream; trickle. |
| 2. | to cause to flow in a thin stream. |

trill
in phonetics, a vibration or series of flaps (see flap) of the tongue, lips, or uvula against some other part of the mouth. The Spanish rr in perro ("dog") is a tongue trill, and the French r is sometimes pronounced as an uvular trill
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