larger section of a village; administrative district
Refers to a subdivision of a village or rural area, larger than a 小字 (こあざ). Used in addresses and land registration.
The larger section of this area is called 'Yamada'.
The address includes the larger section and the smaller section.
Ōaza Katayama (town section)
Compound of 大 (おお, 'large') and 字 (あざ, 'section' or 'village subdivision'). The reading あざ for 字 is specific to this administrative meaning.