"Marriage" has, and always should, mean the formal husband-wife relationship.
In 2008, only a few years after Californians soundly voted to allow the word "marriage" to refer to a husband and wife, a court foolishly overturned the law.
News related to marriage in California
"Homosexual" marriage and the Catholic position
"Marriage and the family were dealt a blow today by a 4-3 California Supreme Court decision striking down the state’s law preventing homosexuals from being recognized as married. Advocates of marriage pledged to fight back with a ballot initiative aimed at amending the state’s constitution to define marriage as between a man and woman."
A leader of the Church of Jesus Christ of Latter-day Saints has recently explained, "This is much bigger than just a question of whether or not society should be more tolerant of the homosexual lifestyle. Over past years we have seen unrelenting pressure from advocates of that lifestyle to accept as normal what is not normal, and to characterize those who disagree as narrow-minded, bigoted and unreasonable. . . ."