応おう和わおうわMeanings1nounŌwa era (961.2.16-964.7.10)A specific Japanese era name (年号) used in the mid-Heian period. Used only in historical contexts.応おう和わ年ねん間かんに編へん纂さんされた法ほう令れい集しゅうがある。There is a collection of laws compiled during the Ōwa era.