coholder

noun

co·​hold·​er ˌkō-ˈhōl-dər 

variants or co-holder

plural coholders or co-holders

: one of two or more holders of an account, position, document, right, etc.

named her mother coholder of the account

the coholders of the patent

Martinez is still the co-holder of the record for most hits in a Division Series …

—Jay Jaffe

Word History

First Known Use

1868, in the meaning defined above