noun
Hōan era (1120.4.10-1124.4.3)
Historical Japanese era name (年号). Used in historical contexts to refer to the period from April 10, 1120 to April 3, 1124.
保安元年は1120年です。
The first year of the Hōan era is 1120.
The era name 保安 (Hōan) was adopted during the late Heian period. The exact derivation is uncertain; it is a conventional historical era name.