the world > action or operation > advantage > usefulness > use (made of things) > use or make use of [verb (transitive)] > make available for use (2)
transitive. To make accessible or available to all or to (also for) a specified category of person. Cf. to open up at phrasal verbs.
figurative. To open up (anything) so as to liberate or extract something from it; to open, penetrate, break into, begin to use. Also absol.