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in music, ornamentornament,
in music, notes added to a melodic line for the purpose of embellishment or decoration, often called graces. Ornamentation was practiced as early as the Middle Ages by the singers of plainsong, and the practice seems to have reached its height in the baroque era.
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 consisting of the more or less rapid alternation of two adjacent notes. Indicated by any of several conventional symbols, it varies in speed and duration and in the manner of its beginning and ending according to context. Originating in the Renaissance, the trill became the most important of ornaments during the baroque period. In British usage the term shake is more common.
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McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


Music a melodic ornament consisting of a rapid alternation between a principal note and the note a whole tone or semitone above it.
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005


(TRansparent Interconnection of Lots of Links) A network layer 2 protocol that functions like a layer 3 protocol and is sometimes called "routable Ethernet." It was designed to overcome the deficiencies of the spanning tree protocol (STP), which limits traffic to one path in the network and blocks the rest.

Routing Bridges (RBridges)
TRILL uses the IS-IS link state routing protocol implemented in a routing bridge (RBridge). Operating like a bridge and router, RBridges support multiple paths and are compatible with regular bridges. See spanning tree protocol, IS-IS and bridge router.
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References in periodicals archive ?
His first initiative will be integrating Trill's technology and model into Lonely Planet's digital properties, then focusing on finding further transformative adjacent spaces in travel.
Lip Trills. Lip trills allow the singer to safely explore the range (as long as the trills are vibrant and free).
She brought Trill into a quiet room in her house to allow her to explore and acclimate.
Though trill is a word to describe a vibratory sound, that's not what it means in rap culture.
Though the use of [[??]] may not be very frequent in this variety, a simplification of the multiple trill articulations of both /r/ and /r/ in words such as Enrique 'Henry' [en.'], el radio 'the radio' [el.'ra.ojo], and carro 'car' ['] seems to be very common.
Finally the guilt became too much for Trill, and he told his wife what he had done then walked into a police station and confessed, even though no one suspected a thing.
Trill notes in her acknowledgments that two of her postgraduate students, Fith Lanum and Sara Murphy, have completed dissertations on Lady Anne Halkett's life and writings.
Given the sheer volume of this material, rigorous selection is obviously necessary, but one regrets that while providing a representative sample of Halkett's "Occational Meditations," Trill omits the biblical meditations, which in the case of NLS MS 6500: 1693/4-95, for example, constitute two-thirds of the volume.
Most of the 11 originals here sublimely intertwine the bitter and the sweet, and Allen delivers them in a voice that can flip mid-phrase from a twittering trill to a sharp-edged sneer.
The traditional belief that the dominant pronunciation in Old and Middle English was [r] (an apical trill) is still supported by some authors, but there is growing consensus that there was a fairly wide range of /r/realisations already in early Germanic, and that the pronunciation of/r/ in Old English was about as variable as it is in present-day English.