遗物
yíwù · HSK 7
memento
⚱️ 遗 left-behind + 物 thing = a thing left behind: a relic or memento
遗 means to leave behind or bequeath; 物 means object or thing. Together they name the thing someone leaves behind: an heirloom, legacy, or keepsake. The hangover sense is figurative: a leftover trace from before.