waddler

from WordNet (r) 3.0 (2006)
waddler
    n 1: someone who walks with a waddling gait; "fat waddlers who
         walk like pigeons"
    
from The Collaborative International Dictionary of English v.0.48
Waddler \Wad"dler\, n.
   One who, or that which, waddles.
   [1913 Webster]
    

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