IPA: //koʊˈkæptɪn//
KK: /koʊˈkæptɪn/
A person who shares the role of captain with another, leading a team or group together.
The cocaptains worked closely to ensure the team was well-prepared for the championship.
Cocaptain → It is formed from "co-" (meaning together) and "captain" (from Old French *capitain*, meaning leader or chief). The word "cocaptain" refers to a person who shares the leadership role with another captain.
Think of two leaders working "together" ('co-') as captains on a ship — that's what a cocaptain is.