Source : Webster's Revised Unabridged Dictionary (1913)

Pronged \Pronged\, a.
   Having prongs or projections like the tines of a fork; as, a
   three-pronged fork.

Source : WordNet®

pronged
     adj 1: having prongs or tines; usually used in combination; "a
            three-tined fork" [syn: {tined}]
     2: resembling a fork; divided or separated into two branches;
        "the biramous appendages of an arthropod"; "long branched
        hairs on its legson which pollen collects"; "a forked
        river"; "a forked tail"; "forked lightning"; "horseradish
        grown in poor soil may develop prongy roots" [syn: {bifurcate},
         {biramous}, {branched}, {forked}, {forficate}, {prongy}]