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

screamer \scream"er\ skr=em"~er, n. zool.
   any one of three species of south american birds constituting
   the family anhimidae, and the suborder palamedeae. they
   have two spines on each wing, and the head is either crested
   or horned. they are easily tamed, and then serve as guardians
   for other poultry. the crested screamers, or chajas, belong
   to the genus chauna. the horned screamer, or kamichi, is
   palamedea cornuta.
   1913 webster

   2. something so remarkable as to provoke a scream, as of joy.
      slang
      webster 1913 suppl.

   3. an exclamation mark. printer's slang
      webster 1913 suppl.
see also:
anhimidae palamedeae chauna palamedea cornuta 

[2] : WordNet (r) 2.0

screamer
     n 1: someone who communicates vocally in a very loud voice syn:
          roarer, bawler, bellower, screecher, shouter,
          yeller
     2: a sensational newspaper headline
     3: gooselike aquatic bird of south america having a harsh
        trumpeting call
     4: a very hard hit ball syn: scorcher
see also:
roarer bawler bellower screecher shouter yeller 
scorcher 

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

45 moby thesaurus words for "screamer":
   banner, banner head, bloomer, blooper, bobble, bonehead play,
   boner, boo-boo, boob stunt, boot, caption, drop head, dropline,
   dumb trick, epigraph, fool mistake, foozle, foul-up, goof, hanger,
   head, heading, headline, howler, jump head, legend, louse-up,
   motto, muck-up, overline, pratfall, rubric, running head,
   running title, scarehead, screw-up, spread, spreadhead, streamer,
   subhead, subheading, subtitle, superscription, title, title page

[4] : The Free On-line Dictionary of Computing (27 SEP 03)

screamer
     
        an extension of common lisp providing nondeterministic
        backtracking and constraint programming.
     
        ftp://ftp.ai.mit.edu/pub/screamer.tar.z.
     
        isn't all backtracking nondeterministic by definition?
     
     
see also:
common lisp nondeterministic backtracking constraint lt;ftp://ftp.ai.mit.edu/pub/screamer.tar.zgt; 

Screamer >> S Words
Screamer, definition of term: Screamer
screamer_pag1.html