Defining a marriage between one man and one woman to be the only legal domestic union to be recognized by the state.

The machinists are not the only union threatening to strike.

The provision was considered vital because the drivers are the only union thought capable of preventing a paper from operating successfully during a strike.

The queen of the island had a young son, the result of her only sexual union.

Western Province is the only union that has never changed its name or added anything to it.

In 2008, Proposal 2 aimed to define the only legal union as a "marriage between one man and one woman."

It is an industry union and the only union working exclusively in the Australian university sector.

The only major unions left in this country are public sector workers.

It is also the only major union that supported Mr. Reagan in the 1980 and 1984 elections.

The vote was considered critical because the drivers are the only union considered powerful enough to stop publication of the newspaper in a strike.