Definition of "Universal" :
noun: coupling that connects two rotating shafts allowing freedom of movement in all directions
"In motor vehicles a universal joint allows the driveshaft to move up and down as the vehicle passes over bumps."
noun: a behavioral convention or pattern characteristic of all members of a particular culture or of all human beings
"Some form of religion seems to be a human universal."
noun: (logic) a proposition that asserts something of all members of a class
noun: (linguistics) a grammatical rule (or other linguistic feature) that is found in all languages
adjective: of worldwide scope or applicability
adjective: adapted to various purposes, sizes, forms, operations
adjective: applicable to or common to all members of a group or set
"The play opened to universal acclaim."