The Collaborative International Dictionary of English v.0.48:

Clamor \Clam"or\, v. t. [imp. & p. p. Clamored; p. pr. & vb.
   n. Clamoring.]
   1. To salute loudly. [R.]
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            The people with a shout
            Rifted the air, clamoring their god with praise.
                                                  --Milton
      .
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   2. To stun with noise. [R.] --Bacon.
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   3. To utter loudly or repeatedly; to shout.
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            Clamored their piteous prayer incessantly.
                                                  --Longfellow.
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            To clamor bells, to repeat the strokes quickly so as
            to produce a loud clang.              --Bp.
                                                  Warbur?ion.
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WordNet (r) 3.0 (2006):

clamoring
    n 1: loud and persistent outcry from many people; "he ignored
         the clamor of the crowd" [syn: clamor, clamoring,
         clamour, clamouring, hue and cry]