Source : Webster's Revised Unabridged Dictionary (1913)

Gelly \Gel"ly\, n.
   Jelly. [Obs.] --Spenser.

Source : WordNet®

gelly
     n : a type of dynamite in which the nitroglycerin is absorbed in
         a base of wood pulp and sodium or potassium nitrate [syn:
          {gelignite}]