gill

1. (noun) respiratory organ of aquatic animals that breathe oxygen dissolved in water
Synonyms: branchia
Related Words: ceras, ctenidium, external gill, respiratory organ

2. (noun) any of the radiating leaflike spore-producing structures on the underside of the cap of a mushroom or similar fungus
Synonyms: lamella
Related Words: plant organ

3. (noun) a United States liquid unit equal to 4 fluid ounces
Related Words: United States liquid unit

4. (noun) a British imperial capacity unit (liquid or dry) equal to 5 fluid ounces or 142.066 cubic centimeters
Related Words: British capacity unit, Imperial capacity unit



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