Cathedral

1. a. Resembling the aisles of a cathedral; as, cathedral walks.
2. n. The principal church in a diocese, so called because in it the bishop has his official chair (Cathedra) or throne.
3. a. Pertaining to the head church of a diocese; as, a cathedral church; cathedral service.
4. a. Emanating from the chair of office, as of a pope or bishop; official; authoritative.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.