1. gatekeep - Noun
2. gatekeep - Verb
To control or limit access to something.
(sociology) To limit (sometimes manipulatively, rather than directly) how much of a role another party, often a spouse, has in some task.
(by extension, slang, Internet) To limit another party's participation in a collective identity or activity, usually due to undue pettiness, resentment, or overprotectiveness.
gatekeep (plural gatekeeps)
A gatekeeper.