DuckCorp Dico

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1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   Quadriceps \Quad"ri*ceps\, n. [NL., fr. L. qyattuor four + caput
      head.] (Anat.)
      The great extensor muscle of the knee, divided above into
      four parts which unite in a single tendon at the knee.
      [1913 Webster]