Definition of gatekeeper noun from the Oxford Advanced American Dictionary



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  1. 1a person whose job is to check and control who is allowed to go through a gate
  2. 2a person, system, etc. that decides whether someone or something will be allowed, or allowed to reach a particular place or person His secretary acts as a gatekeeper, reading all mail before it reaches her boss. Literacy and math are the gatekeeper skills that give kids access to academic success.
See the Oxford Advanced Learner's Dictionary entry: gatekeeper