Source : Webster's Revised Unabridged Dictionary (1913)

Scion \Sci"on\, n. [OF. cion, F. scion, probably from scier to
   saw, fr. L. secare to cut. Cf. {Section}.]
   1. (Bot.)
      (a) A shoot or sprout of a plant; a sucker.
      (b) A piece of a slender branch or twig cut for grafting.
          [Formerly written also cion, and cyon.]

   2. Hence, a descendant; an heir; as, a scion of a royal
      stock.

Source : WordNet®

scion
     n : a descendent or heir; "a scion of royal stock"