Webster's Revised Unabridged Dictionary · 1913

Partner

Partner (part"nẽr) , noun

[For parcener, influenced by part.]

1.
One who has a part in anything with an other; a partaker; an associate; a sharer.
(a)
A husband or a wife.
(b)
Either one of a couple who dance together.
(c)
One who shares as a member of a partnership in the management, or in the gains and losses, of a business.
Partner of his fortune. — Shakespeare
My other self, the partner of my life. — Milton
2.
(Law) An associate in any business or occupation; a member of a partnership. See Partnership.
3.
(Nautical) A framework of heavy timber surrounding an opening in a deck, to strengthen it for the support of a mast, pump, capstan, or the like.
Collocations (1)
Dormant partner or Silent partner , See under Dormant, a.

Partner , transitive verb

To associate, to join. [Obsolete] — Shakespeare