Merriam-Webster Online Dictionary.
Main Entry: mar·riage
Pronunciation: \ˈmer-ij, ˈma-rij\
Function: noun
Etymology: Middle English mariage, from Anglo-French, from marier to marry
Date: 14th century
1 a (1) : the state of being united to a person of the opposite sex as husband or wife in a consensual and contractual relationship recognized by law (2) : the state of being united to a person of the same sex in a relationship like that of a traditional marriage