crime of killing one's master or parent (Edo period)
Historical legal term from the Edo period referring to the grave crime of murdering one's lord or parent. Not used in modern law.
very grave sin
Buddhist term for an extremely serious sin, such as killing a parent or an arhat. Rare outside religious contexts.
In the Edo period, killing one's lord or parent was considered a grave crime and was punished by death.
In Buddhism, killing one's parent is counted among the very grave sins.