GEL - A semi-solid to almost solid colloid of a solid and a liquid, such as jelly, cheese or opal.
GUN - A very portable, short firearm, for hand use, which fires bullets or projectiles, such as a handgun, revolver, pistol, or Derringer.
LEG - The lower limb of a human being or animal that extends from the groin to the ankle.
LUG - A lug nut.
PEN - An enclosed area used to contain domesticated animals, especially sheep or cattle.
PUG - The footprint of an animal. (Also pugmark) (From the Hindi for 'foot', related to Sanskrit 'padh' and Greek 'ped').
PEG - A cylindrical wooden, metal etc. object used to fasten or as a bearing between objects.
GNU - A large antelope native to Africa having curved horns.
GLUE - A hard gelatin made by boiling bones and hides, used in solution as an adhesive; or any sticky adhesive substance.
LUNG - A biological organ that extracts oxygen from the air.
PLUG - A pronged connecting device which fits into a mating socket.
GLEN - A secluded and narrow valley; a dale; a depression between hills.
GULP - The usual amount swallowed.
LUGE - A racing sled for one or two people that is ridden with the rider or riders lying on their back.
LUNGE - A sudden forward movement, especially with a sword.
PLUNGE - The act of plunging or submerging.