jelly \jel"ly\, n.; pl. jellies.  formerly gelly, gely, f.
   gel'ee jelly, frost, fr. geler to freeze. l. gelare; akin
   to gelu frost. see gelid.
   1913 webster
   1. anything brought to a gelatinous condition; a viscous,
      translucent substance in a condition between liquid and
      solid; a stiffened solution of gelatin, gum, or the like.
      1913 webster

   2. the juice of fruits or meats boiled with sugar to an
      elastic consistence; as, currant jelly; calf's-foot jelly.
      1913 webster

   jelly bag, a bag through which the material for jelly is
      strained.

   jelly mold, a mold for forming jelly in ornamental shapes.
      

   jelly plant bot., australian name of an edible seaweed
      eucheuma speciosum, from which an excellent jelly is
      made. --j. smith.

   jelly powder, an explosive, composed of nitroglycerin and
      collodion cotton; -- so called from its resemblance to
      calf's-foot jelly.
      1913 webster
see also:
jellies gelid jelly bag jelly mold jelly plant eucheuma speciosum 
jelly powder