doorkeeper
nounUS /ˈdôr-ˌkē-pər/
Etymology Compound of door + keeper.
1
The person in charge of an entryway, sometimes responsible for security in the immediate area around the entryway.
- Near-synonyms: doorman, concierge, bouncer
- The manager at Carnegie Hall was told to get another usher in his stead; the doorkeeper at the theatre was warned not to admit him to the house; and Charley Edwards remorsefully promised the boy's father not to see him again.1920, Willa Cather, Youth and the Bright Medusa.:
2
Figuratively Someone with power to keep others out of some sphere or activity.