burial mound for a person who died for love
Refers to a grave or mound built for someone who died because of love, often in classical or literary contexts.
In this region, there remains a burial mound for a girl who died of a tragic love.
Compound of 恋 (koi, 'love') and 塚 (tsuka, 'mound'). The reading こいづか is a standard rendaku form.