capital of Tibet ca·pi·ta·loftibet uncommon noun 1. the sacred city of Lamaism; known as the Forbidden City for its former inaccessibility and hostility to strangers SynonymsLhasaLassacapital of TibetForbidden City Related words Broader terms national capital Parts Tibet WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.