Meaning of the word counterfoil in English

What does counterfoil mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

counterfoil

US /ˈkaʊntərˌfɔɪl/
UK /ˈkaʊntəfɔɪl/

Noun

the part of a check, ticket, or other document that is retained by the issuer as a record

Example:
Always keep the counterfoil of your check for your records.
The ticket had a detachable counterfoil for proof of purchase.