What is "matrimony vine"

Matrimony \Mat"ri*mo*ny\, n. [OE. matrimoine, through Old French, fr. L. matrimonium, fr. mater mother. See Mother.]

1. The union of man and woman as husband and wife; the nuptial state; marriage; wedlock.

   If either of you know any impediment, why ye may not be lawfully joined together in matrimony, ye do now confess it.
   --Book of Com. Prayer (Eng. Ed.)

2. A kind of game at cards played by several persons.

   Matrimony vine (Bot.), a climbing thorny vine ( Lycium barbarum) of the Potato family.
   --Gray.

   Syn: Marriage; wedlock. See Marriage.

n. any of various shrubs or vines of the genus Lycium with showy flowers and bright berries [syn: boxthorn]