gill (n.1)

"organ of breathing in fishes," early 14c., of unknown origin, perhaps related to Scandinavian words, such as Old Norse gjölnar which perhaps means "gills," and Old Danish -gæln (in fiske-gæln "fish gill"); said to be ultimately from a PIE *ghel-una- "jaw" (cognate: Greek kheilos "lip"). Related: Gills.

gill (n.2)

liquid measure (in modern use commonly a quarter of a pint), late 13c., from Old French gille, a wine measure, and from Medieval Latin gillo "earthenware jar," words of uncertain origin, perhaps related to the source of gallon.


fem. proper name, shortened form of Gillian. Also see Jill. Gill-flirt "giddy young woman" is from 1630s.

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Definitions of gill from WordNet

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