\Trill\, v. i. [OE. trillen to roll, turn round; of Scand.
origin; cf. Sw. trilla to roll, Dan. trilde, Icel.
[thorn]yrla to whirl, and E. thrill. Cf. {Thrill}.]
To flow in a small stream, or in drops rapidly succeeding
each other; to trickle. --Sir W. Scott.
      And now and then an ample tear trilled down Her
      delicate cheek.                          --Shak.
      Whispered sounds Of waters, trilling from the riven
      stone.                                   --Glover.

\Trill\, v. t. [OE. trillen; cf. Sw. trilla to roll.]
To turn round; to twirl. [Obs.] --Gascoigne.
      Bid him descend and trill another pin.   --Chaucer.

\Trill\, v. t. [imp. & p. p. {Trilled}; p. pr. & vb. n.
{Trilling}.] [It. trillare; probably of imitative origin.]
To impart the quality of a trill to; to utter as, or with, a
trill; as, to trill the r; to trill a note.
      The sober-suited songstress trills her lay. --Thomson.

\Trill\, v. i.
To utter trills or a trill; to play or sing in tremulous
vibrations of sound; to have a trembling sound; to quaver.
      To judge of trilling notes and tripping feet. --Dryden.

\Trill\, n. [It. trillo, fr. trillare. See {Trill} to
shake.]
1. A sound, of consonantal character, made with a rapid
   succession 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. The action of the organs in producing such sounds; as, to
   give a trill to the tongue. d
3. (Mus.) 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}.