lobby >> ˈlɒbi
Definition: [noun] a room providing a space out of which one or more other rooms or corridors lead, typically one near the entrance of a public building.
Example: they went into the hotel lobby
Definition: [noun] (in the UK) any of several large halls in the Houses of Parliament in which MPs may meet members of the public.
Definition: [noun] a group of people seeking to influence legislators on a particular issue.
Example: members of the anti-abortion lobby
Definition: [verb] seek to influence (a legislator) on an issue.
Example: they insist on their right to lobby Congress