Source : WordNet®

peter out
     v 1: end weakly; "The music just petered out--there was no proper
          ending" [syn: {taper off}, {fizzle out}, {fizzle}]
     2: use up all one's strength and energy and stop working; "At
        the end of the march, I pooped out" [syn: {poop out}, {run
        down}, {run out}, {conk out}]