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41.
From the Origin:
1635–45; < It trillo quaver or warble in singing ≪
Gmc; cf. D give trillen to vibrate, late ME trillen to shake or rock (something)
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verb (used with object)

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.

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verb (used without object)

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.

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noun

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.
a. a sequence of repetitive, rapid, vibratory movements produced in any free articulator or membrane by a rush of air expelled from the lungs and often causing a corresponding sequence of contacts between the vibrating articulator and another organ or surface.

b. a speech sound produced by such a trill.
’if we can discover the meaning in the trilling of a frog,
perhaps we may understand why it is for us not merely noise but a song of poetry and emotion.’

adrian forsyth
by citypix November 11, 2009
 
8.
true and real fused together
"What are you doing?"
"Just being trill."
by Robyne Marie March 06, 2008
 
9.
True and chill
It's abouts to be a trill day at the lake
by Chelena13 June 08, 2014
 
10.
True and Real
Imma Lil Trill Nigga and I always keep a pistol
by LiL RiLL August 31, 2009
 
11.
true
oh trills. shes totally ugly
by minkyminkminkmink May 27, 2009
 
12.
A race of symbiotic creatures from alpha quadrant. Symbiotes joined a host when the host is in their mid-twenties. Hosts can live through the live of numerous hosts
Jadzia Dax was a trill who lived with the symbiote Dax and the host Jadzia
by Samual M-F'ing Jackson June 11, 2008
 
13.
Trills is a noun that represents nothing and everything. One says Trills simply whenever something good happens usually involving getting ass or smokin weed, but is not limited to those. Its derivation is arguable but most agree that its a combination of TRue and chILL.
Mike- Yo, how good was that blunt i rolled last night
Ted- Fucking sick, i got ripped out my mind
Mike- Trills.
Ted- Trills.
by Trills. November 27, 2007
 
14.
thats whats up; cool
1. that game was trills (cool)
2. damn, that guy was (thats whats up)trills
by blOOdz_bitch March 03, 2005