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 head. 1  1: the division of the human body that contains the brain, the eyes, the ears, the nose, and the mouth; also : the corresponding anterior division of the body of various animals including all vertebrates, most arthropods, and many mollusks and worms. 2  2: headache.