Source : Webster's Revised Unabridged Dictionary (1913)

Dipropargyl \Di`pro*par"gyl\, n. [Prefix di- + propargyl.]
   (Chem.)
   A pungent, mobile, volatile liquid, {C6H6}, produced
   artificially from certain allyl derivatives. Though isomeric
   with benzine, it is very different in its chemical relations.
   Called also {dipropinyl}.