Marriage with a dead person or between dead people.

(historical) A long-term monogamous relationship between two unmarried women, especially in New England between the 18th and early 20th centuries.

(derogatory, slang) Synonym of same-sex marriage

(UK, law) A giving out or boasting by a party that he or she is married to another, whereby a common reputation of their matrimony may ensue.

Used other than figuratively or idiomatically: see marriage, inequality. / The state of same-sex couples being unable to legally marry.

(anthropology) In Mosuo culture, a relationship in which partners do not live in the same household, and their children are raised by their mothers and the mothers' families.

(offensive, vulgar) Synonym of gay marriage

(palmistry) Any of the short horizontal lines under the little finger and going to the edge of the palm.

plural of marriage line

(chiefly UK) A marriage certificate.