GILL

Definition of GILL

  1. (noun)a British imperial capacity unit (liquid or dry) equal to 5 fluid ounces or 142.066 cubic centimeters
  2. (noun)a United States liquid unit equal to 4 fluid ounces
  3. (noun)any of the radiating leaflike spore-producing structures on the underside of the cap of a mushroom or similar fungus
  4. (noun)respiratory organ of aquatic animals that breathe oxygen dissolved in water