noun
Edo-period magistrate for uncovering hidden Christians
Historical official responsible for investigating and forcing the conversion of hidden Christians (kakure kirishitan) during the Edo period. Rarely encountered outside historical contexts.
宗門改役は、江戸時代にキリシタンを取り締まる役職だった。
The shūmon aratameyaku was an official post in the Edo period that policed Christians.
Compound of 宗門 (shūmon, 'religious sect') + 改 (aratame, 'inspection') + 役 (yaku, 'official role'). The term is specific to Edo-period anti-Christian policy.