DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   stammer
       n 1: a speech disorder involving hesitations and involuntary
            repetitions of certain sounds [syn: stammer, stutter]
       v 1: speak haltingly; "The speaker faltered when he saw his
            opponent enter the room" [syn: bumble, stutter,
            stammer, falter]