BaluchistanPronunciation: /bəˌluːtʃɪˈstɑːn, -ˈstan/Definition of Baluchistan 1a mountainous region of western Asia, which includes part of SE Iran, SW Afghanistan, and western Pakistan. 2a province of western Pakistan; capital, Quetta. Baluchistan in other Oxford dictionaries Definition of Baluchistan in the US English dictionary