Maksud perkataan "cold case" dalam bahasa Melayu

Apakah maksud "cold case" dalam bahasa Inggeris? Terokai maksud, sebutan dan penggunaan khusus perkataan ini bersama Lingoland

cold case

US /ˈkoʊld keɪs/
UK /kəʊld keɪs/
"cold case" picture

Kata Nama

kes dingin, kes jenayah tidak selesai

an unsolved criminal investigation that has been closed but could be reopened if new evidence emerges

Contoh:
Detectives reopened the cold case after a new witness came forward.
The documentary explored several famous cold cases.