buspirone

noun
bu·​spi·​rone | \ byü-ˈspī-ˌrōn How to pronounce buspirone (audio) \

Medical Definition of buspirone

: a mild antianxiety tranquilizer that is administered in the form of its hydrochloride C21H31N5O2·HCl and does not induce significant tolerance or psychological dependence — see buspar