motormouth

from WordNet (r) 3.0 (2006)
motormouth
    n 1: someone who talks incessantly; "I wish that motormouth
         would shut up"
from The Collaborative International Dictionary of English v.0.48
Motormouth \Mo"tor*mouth\, n.
   a person who talks excessively. [derogatory]
   [PJC]
antiflux / dictionary / motormouth
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