Definition of "gate-keeper" [gate-keeper]

• One who keeps a gate, as of a turnpike, race-course, railroad-crossing, private grounds, etc. (noun)
• An English collectors' name for an Old World agapetid butterfly, Satyrus megæra, a species which occurs throughout Europe and western Asia. Also called the wall-brown. (noun)

The Century Dictionary (Public Domain)

• "This was yet another instance revealing how vulnerable the Internet is to discrimination and gate-keeper control absent clear rules of the road."
• "If Rick never made another movie except his devastating role as the "gate-keeper" in Ghostbusters, the world would continue to be a better place because of him."
• "Think how much govt tape there will be to get anything accomplished ... they talk about the gate-keeper which is a govt run agency to decide who is elegible for the new plan and who is not ... that will put so much more cost and time into the plan ... no why is it worth it"