›one of two people who do something together or are closely involved in some way: Children, hold your partner’s hand when you cross the street.›A partner in a company is one of the owners.›A partner is also one of two people who dance together or who play a sport or a game together, esp. when they play as a team.›A person’s partner can also be the person to whom someone is married, or to whom the person is not married but with whom they have a close relationship.partnership