lobby
Definitions
A large entrance hall or foyer, especially in a hotel, theater, or office building.
A group of people who attempt to influence the decisions of government officials on behalf of a particular cause or industry.
To seek to influence a politician or public official on an issue.
Examples
We met in the hotel lobby to discuss the plans for the conference.
The activist group decided to lobby the government for stricter environmental regulations.
The grand entrance features a marble floor and a spacious lobby area.