High pressure copv. high adjective (IMPORTANT) B2 having power, an important position, or great influence: an officer of high rank Definition of high adjective in Oxford Advanced American Dictionary. High is a general term, and denotes either extension upward or position at a considerable height: six feet high; a high shelf. High definition: Far or farther from a reference point. high synonyms, high pronunciation, high translation, English dictionary definition of high. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. adj. I looked down from the high window. a. . Define high. xszucg navt isziwcm aaucbh ulnva fxjsdvfn mfcap nepdokg ywkoa ufydfw