[1] : The Collaborative International Dictionary of English v.0.48

shrill \shrill\, v. t.
   to utter or express in a shrill tone; to cause to make a
   shrill sound.
   1913 webster

         how poor andromache shrills her dolors forth. --shak.
   1913 webster

[2] : The Collaborative International Dictionary of English v.0.48

shrill \shrill\, a. compar. shriller; superl. shrillest.
   oe. shril, schril; akin to lg. schrell, g. schrill. see
   shrill,v. i.
   acute; sharp; piercing; having or emitting a sharp, piercing
   tone or sound; -- said of a sound, or of that which produces
   a sound.
   1913 webster

         hear the shrill whistle which doth order give
         to sounds confused.                      --shak.
   1913 webster

         let winds be shrill, let waves roll high. --byron.
   1913 webster
see also:
shriller shrillest shrill 

[3] : The Collaborative International Dictionary of English v.0.48

shrill \shrill\, n.
   a shrill sound. obs. --spenser.
   1913 webster

[4] : The Collaborative International Dictionary of English v.0.48

shrill \shrill\, v. i. imp.  p. p. shrilled; p. pr.  vb. n.
   shrilling. oe. schrillen, akin to g. schrillen; cf. as.
   scralletan to resound loudly, icel. skr"olta to jolt, sw.
   skraumlla to shrill, norw. skryla, skr?la. cf. skirl.
   to utter an acute, piercing sound; to sound with a sharp,
   shrill tone; to become shrill.
   1913 webster

         break we our pipes, that shrilledloud as lark.
                                                  --spenser.
   1913 webster

         no sounds were heard but of the shrilling cock.
                                                  --goldsmith.
   1913 webster

         his voice shrilled with passion.         --l. wallace.
   1913 webster
see also:
shrilled shrilling skirl 

[5] : WordNet (r) 2.0

shrill
     adj : high-pitched and sharp; "piercing screams"; "a shrill
           whistle" syn: piercing, sharp
     v : utter a shrill cry syn: shriek, pipe up, pipe
see also:
piercing sharp shriek pipe up pipe 

[6] : Moby Thesaurus II by Grady Ward, 1.0

80 moby thesaurus words for "shrill":
   absonant, acute, argute, atonal, cacophonous, caterwaul, cracked,
   creak, creaky, diaphonic, disconsonant, discordant, disharmonic,
   disharmonious, dissonant, ear-piercing, ear-splitting, flat,
   grating, harsh, high, high-pitched, howl, howling, immelodious,
   inharmonic, inharmonious, keen, keening, musicless, nonmelodious,
   off, off-key, off-tone, out of pitch, out of tone, out of tune,
   penetrating, piercing, pipe, piping, raucous, reedy, screak,
   screaky, scream, screech, screeching, screechy, sharp, shriek,
   shrieking, shrieky, skirl, skreigh, sour, squawk, squeak,
   squeaking, squeaky, squeal, strident, thin, treble, tuneless,
   ululant, ululation, unharmonious, unmelodious, unmusical,
   untunable, untuned, untuneful, wail, wailing, whine, whining,
   whistle, whistling, yammer

Shrill >> S Words
Shrill, definition of term: Shrill
shrill_pag1.html