cof ‧ fin /ˈkɒfən, ˈkɒfɪn $ ˈkɒː-, ˈkɑː-/ BrE AmE noun [countable]
[ Date: 1300-1400 ; Language: Old French ; Origin: cophin , from Latin cophinus 'basket' , from Greek kophinos ]
a long box in which a dead person is buried or burnt SYN casket American English
⇨ a nail in sb’s/sth’s coffin at ↑ nail 1 (3)