gatekeeper

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. someone who controls access to something
- there are too many gatekeepers between the field officers and the chief
• Hypernyms:
person, individual, someone, somebody, mortal, soul
2. someone who guards an entrance
• Syn:
doorkeeper, doorman, door guard, hall porter, porter, ostiary
• Hypernyms:
guard
• Hyponyms:
commissionaire, night porter, ticket collector, ticket taker