The Collaborative International Dictionary of English v.0.48:

Scream \Scream\ (skr[=e]m), v. i. [imp. & p. p. Screamed
   (skr[=e]md); p. pr. & vb. n. Screaming.] [Icel. skraema to
   scare, terrify; akin to Sw. skr[aum]ma, Dan. skraemme. Cf.
   Screech.]
   To cry out with a shrill voice; to utter a sudden, sharp
   outcry, or shrill, loud cry, as in fright or extreme pain; to
   shriek; to screech.
   [1913 Webster]

         I heard the owl scream and the crickets cry. --Shak.
   [1913 Webster]

         And scream thyself as none e'er screamed before.
                                                  --Pope.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Scream \Scream\, n.
   A sharp, shrill cry, uttered suddenly, as in terror or in
   pain; a shriek; a screech. "Screams of horror." --Pope.
   [1913 Webster]

WordNet (r) 3.0 (2006):

scream
    n 1: sharp piercing cry; "her screaming attracted the neighbors"
         [syn: scream, screaming, shriek, shrieking,
         screech, screeching]
    2: a high-pitched noise resembling a human cry; "he ducked at
       the screechings of shells"; "he heard the scream of the
       brakes" [syn: screech, screeching, shriek, shrieking,
       scream, screaming]
    3: a joke that seems extremely funny [syn: belly laugh,
       sidesplitter, howler, thigh-slapper, scream, wow,
       riot]
    v 1: utter a sudden loud cry; "she cried with pain when the
         doctor inserted the needle"; "I yelled to her from the
         window but she couldn't hear me" [syn: shout, shout
         out, cry, call, yell, scream, holler, hollo,
         squall]
    2: utter or declare in a very loud voice; "You don't have to
       yell--I can hear you just fine" [syn: yell, scream]
    3: make a loud, piercing sound; "Fighter planes are screaming
       through the skies"