noun
belongings of the deceased; inherited item; memento
Refers to items left behind by someone who has died, often with emotional or legal significance. Can range from personal keepsakes to the entire estate.
祖母の遺品を整理していたら、古い手紙が出てきた。
While sorting through my grandmother's belongings, I found an old letter.
彼は父の遺品として、その腕時計
He treasures that watch as a memento of his father.
noun
lost item; lost property
A less common, somewhat formal or legal term for a lost item. In everyday speech, 忘れ物 or 落とし物 are more typical; 遺失物 is a near-synonym often used in official contexts.
See also: 遺失物
駅の遺品取扱所で、落とした傘が見つかった。
I found my lost umbrella at the station's lost-and-found office.
Compound of 遺 (い, 'leave behind') and 品 (ひん, 'article, item'). The 'lost item' sense is an extension of the idea of something left behind, though now less common.