The Collaborative International Dictionary of English v.0.48:

Screaming \Scream"ing\, a.
   1. Uttering screams; shrieking.
      [1913 Webster]

   2. Having the nature of a scream; like a scream; shrill;
      sharp.
      [1913 Webster]

            The fearful matrons raise a screaming cry. --Dryden.
      [1913 Webster]

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]

WordNet (r) 3.0 (2006):

screaming
    adj 1: so extremely intense as to evoke screams; "in screaming
           agony"; "a screaming rage"
    2: resembling a scream in effect; "screaming headlines";
       "screaming colors and designs"
    3: marked by or causing boisterous merriment or convulsive
       laughter; "hilarious broad comedy"; "a screaming farce";
       "uproarious stories" [syn: hilarious, screaming(a),
       uproarious]
    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]