What is the meaning of Cathedral?

Relating to the office of a bishop or an archbishop.

The principal church serving as the office (and some as place of residence) of an archdiocese's/a diocese's archbishop/bishop which is symbolized by an episcopal throne known as the cathedra.

A large or important church building.

A large, impressive, lofty, and/or important building or place of some other kind.

A large buttressed structure built by certain termites.

Alternative letter-case form of the Cathedral.

cathedral (relating to the see of a bishop)

Source: wiktionary.org