Source : Webster's Revised Unabridged Dictionary (1913)

Triumphal \Tri*um"phal\, a. [L. triumphalis: cf. F. triomphal.]
   Of or pertaining to triumph; used in a triumph; indicating,
   or in honor of, a triumph or victory; as, a triumphal crown;
   a triumphal arch.

         Messiah his triumphal chariot turned.    --Milton.

Triumphal \Tri*um"phal\, n.
   A token of victory. [Obs.]

         Joyless triumphals of his hoped success. --Milton.

Source : WordNet®

triumphal
     adj 1: relating to or celebrating a triumph; "a triumphal
            procession"; "a triumphal arch"
     2: joyful and proud especially because of triumph or success;
        "rejoicing crowds filled the streets on VJ Day"; "a
        triumphal success"; "a triumphant shout" [syn: {exultant},
         {exulting}, {jubilant}, {prideful}, {rejoicing}, {triumphant}]