Long Vowel Rule (1): When a word has two vowel, usually the first vowel says its name and the second vowel is silent.
gill noun (FISH) âº [ 1  C usually plural ] the organ through which fish and other water creatures breathe. âº 2  us â [ C ] a measure of liquid that is equal to 0.142 litres or a quarter of a pint. âº 3  the organ through which fish and other water creatures breathe.
Medical Definition of COD. : any of various bottom-dwelling fishes (family Gadidae, the cod family) that usually occur in cold marine waters and often have barbels and three dorsal fins: as a: one (Gadus morhua) of the North Atlantic that is an important food fish b: one (Gadus macrocephalus) of the Pacific Ocean.. : any of various bottom-dwelling fishes (family Gadidae, the cod family) that usually occur in cold marine waters and often have barbels and three dorsal fins: as a: one (Gadus morhua) of the North Atlantic that is an important food fish b: one (Gadus macrocephalus) of the Pacific Ocean. 2.