Source : Webster's Revised Unabridged Dictionary (1913)

Nolo contendere \No"lo con*ten"de*re\ [L., I do not wish to
   contend.] (Law)
   A plea, by the defendant, in a criminal prosecution, which,
   without admitting guilt, subjects him to all the consequences
   of a plea of quilty.

Source : WordNet®

nolo contendere
     n : (law) an answer of `no contest' by a defendant who does not
         admit guilt but that subjects him to conviction [syn: {non
         vult}]