tomb for those without mourners
Refers to a grave or monument for people who died without relatives or anyone to care for their remains. Often associated with communal burial sites or memorials for the unclaimed dead.
People without relatives are buried in the tomb for the unconnected.
Compound of 無縁 (muen, 'without connection') and 塚 (tsuka, 'mound, tomb'), with rendaku voicing the second element to -zuka. The term describes a burial place for those who died without family or social ties.