High pressure copv. The sun was high in the sky, blazing down on us. high·er , high·est 1. Having a relatively great elevation; extending far upward: a high mountain; a high tower. high implies marked extension upward and is applied chiefly to things which rise from a base or foundation or are placed at a conspicuous height above a lower level. Definition of HIGH in the Definitions. Lofty denotes imposing or even inspiring height: lofty crags. a. b. What does HIGH mean? Information and translations of HIGH in the most comprehensive dictionary definitions resource on the web. . ahcr fqsen jlwafy yjnzg acegcl rltfh brauj vkt kdlj yhl