say it: tuh-bi-LEE-see
tbilisi is a noun meaning "the capital and largest city of Georgia on the Kura river". It carries one recorded sense.
the capital and largest city of Georgia on the Kura river
Forms marked are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for tbilisi come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.