Definition of gill

• n. - An organ for aquatic respiration; a branchia.
• n. - The radiating, gill-shaped plates forming the under surface of a mushroom.
• n. - The fleshy flap that hangs below the beak of a fowl; a wattle.
• n. - The flesh under or about the chin.
• n. - One of the combs of closely ranged steel pins which divide the ribbons of flax fiber or wool into fewer parallel filaments.
• n. - A two-wheeled frame for transporting timber.
• n. - A leech.
• n. - A woody glen; a narrow valley containing a stream.
• n. - A measure of capacity, containing one fourth of a pint.
• n. - A young woman; a sweetheart; a flirting or wanton girl.
• n. - The ground ivy (Nepeta Glechoma); -- called also gill over the ground, and other like names.
• n. - Malt liquor medicated with ground ivy.