the officer below the master on a commercial ship

a fellow member of a team

the partner of an animal (especially a sexual partner)

a person's partner in marriage

an exact duplicate

one of a pair

South American holly; leaves used in making a drink like tea

informal term for a friend of the same sex

South American tea-like drink made from leaves of a South American holly called mate

a chess move constituting an inescapable and indefensible attack on the opponent's king