A dance involving coordinated dancing between two partners.

Involving multiple partners.

A person (not a spouse) with whom one lives and is romantically involved

Someone who was once a partner (any sense) but is not one any more.

The fact or practice of having multiple partners.

A partner in a business context (as opposed to a partner in the sense of a personal relationship).

(neologism) single (not involved in a romantic relationship)

(tennis) A player with whom one practises playing rallies, though not as a coach.

plural of partner dance

Domestic violence between people who are in an intimate relationship.