growler

from WordNet (r) 3.0 (2006)

growler
    n 1: a speaker whose voice sounds like a growl
    2: a small iceberg or ice floe just large enough to be hazardous
       for shipping

from The Collaborative International Dictionary of English v.0.48

Growler \Growl"er\, n.
   1. One who growls.
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   2. (Zool.) The large-mouthed black bass. [Local]
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   3. A four-wheeled cab. [Slang, Eng.]
      [1913 Webster]