Proper noun
A region of Afghanistan; based around the Kabul bowl of the province of Kabul, and extending westward along the southern edge of the Hindu-Kush uplands.
(historical) A former country in South Asia. Capital: Kabul; an emirate ruled by the Emir of Kabul.
Source: en.wiktionary.orgIn 1525, Babur described Kabulistan in his memoirs by writing that: "In the country of Kābul there are many and various tribes. Source: Internet