人柱ひとばしら

1. 1person who died for a cause Translated by Jiyomi
2. 2guinea pig (for a new product or service) ; test subject ; sacrificial lamb ; early adopter Translated by Jiyomi
3. 3hitobashira ; ritual human sacrifice by burying a living person under or near a large-scale construction project to invoke divine protection Translated by Jiyomi

Other writings and readings

JMdict entry 1368810. Source and licence.