Longman Dictionary of Contemporary English homepage

gatekeeper

 noun
     
Related topics: Occupations
gate‧keep‧er [countable]
1BODH someone whose job is to open and close a gate, and to allow or not allow people to go through it
2 someone in an organization who has a lot of influence over what products the organization buys, who it buys them from etc
3 someone in an organization who tells customers or people with questions which people in the organization should be able to help them
Definition from the Longman Dictionary of Contemporary English
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