| gill | respiratory organ of aquatic animals that breathe oxygen dissolved in water |
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| gill | any of the radiating leaflike spore-producing structures on the underside of the cap of a mushroom or similar fungus |
| gill | a United States liquid unit equal to 4 fluid ounces |
| gill | a British imperial capacity unit (liquid or dry) equal to 5 fluid ounces or 142.066 cubic centimeters |
| gill | one of the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians |
| gill | one of the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians |
| gill | one of a series of slit openings in the pharynxes of fishes and aquatic amphibians through which water passes |
| gill | a basidiomycete with gills |
| gill | a flat fishnet suspended vertically in the water to entangle fish by their gills |
| gill | one of a series of slit openings in the pharynxes of fishes and aquatic amphibians through which water passes |
| gill | having no gills |
| gill | trailing European aromatic plant of the mint family having rounded leaves and small purplish flowers often grown in hanging baskets |