Source : Webster's Revised Unabridged Dictionary (1913)

Scone \Scone\, n.
   A cake, thinner than a bannock, made of wheat or barley or
   oat meal. [Written variously, {scon}, {skone}, {skon}, etc.]
   [Scot.] --Burns.

Source : WordNet®

scone
     n : small biscuit (rich with cream and eggs) cut into diamonds
         or sticks and baked in an oven or (especially originally)
         on a griddle