Meeting spot for a union Crossword Clue

 The answer to the crossword clue "Meeting spot for a union" is ALTAR.

An altar is a raised structure on which religious sacrifices or offerings are made. It is also a place where people gather to pray or worship. In the context of a union, an altar can be a symbolic meeting place where workers come together to discuss their common interests and goals.

Here are some other words that can be used to complete the crossword clue "Meeting spot for a union":

Hall

Hallway

Meeting room

Office

Union hall

Union office

I hope this helps! Let me know if you have any other questions.