Webster's English Dictionary

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define

de.fine \di-'fi-n\ \-'fi-n-m*nt\ \-'fi--n*r\ vb [ME definen, fr. MF & L; MF 
   definer, fr. L definire, fr. d]e- + finire to limit, end, fr. finis 
   boundary, end 1a: to fix or mark the limits of  1b: to make distinct in 
   outline  2a: to determine the essential qualities or precise meaning of {~  
   the concept of loyalty} 2b: to discover and set forth the meaning of  3: 
   CHARACTERIZE, DISTINGUISH  : to make a definition  - de.fine.ment n