lost property
nounUK /ˌlɒst ˈprɒpəti/
US /ˌlɔːst ˈprɑːpərti/
Lost property is things people forgot or left behind that are kept in a special place.
I found a lost property office at the train station where I could ask about my missing bag.
OTHER MEANINGS
2. A place, often in a station or building, where forgotten things are kept for people to claim.
She went to lost property to see if anyone had handed in her umbrella.
3. The legal status of goods that have been left behind by their owner.
The airline treats unclaimed bags as lost property after thirty days.
4. Items that have been left behind and are waiting to be returned to their owners.
The school keeps a box of lost property near the front office.