Suffix attached to place names to indicate a flat area or plateau. Not used as a standalone noun.
Akita-daira is part of a plain in Akita Prefecture.
上高地は、梓川沿いの美しい平です。
Kamikōchi is a beautiful plateau along the Azusa River.
Kodaira dimension
Standard kanji spelling for this suffix meaning 'plain' or 'plateau'.
Alternate spelling with okurigana; less common but still used.
The reading だいら is a native Japanese word (yamato-kotoba) meaning 'flat area'. The kanji 平 is used for its meaning 'flat' or 'level'.