究jiū 1.仔细推求;追查{study carefully; go into; investigate}: 研～{study; research}|追～{prosecute}|深～。{go into (a matter) seriously; get to the bottom of (a matter)} 2.〈书fml.〉到底;究竟{actually; really; after all}: 此事～应如何办理?{How should this matter actually be dealt with?}