partner

One that is united or associated with another or others in an activity or a sphere of common interest, especially.

A member of a business partnership.

A spouse.

A domestic partner.

A lover.

Either of two persons dancing together.

One of a pair or team in a sport or game, such as tennis or bridge.

A wooden framework used to strengthen a ship’s deck at the point where a mast or other structure passes through it.

To become partners or work or associate as partners.

To be or make a partner of.