cohost

co·host

or co-host (kō′hōst′)n. A joint host, as of a social event.tr.v. co·host·ed, co·host·ing, co·hosts or co-host·ed or co-host·ing or co-hosts To serve as a joint host of: cohosted an awards ceremony.

cohost

(ˌkəʊˈhəʊst; ˈkəʊˌhəʊst) vb (tr) to host (an event) jointlyna person who hosts an event jointly with another person