gatekeep

To control or limit access to something.

To limit (sometimes manipulatively, rather than directly) how much of a role another party, often a spouse, has in some task.

To limit another party's participation in a collective identity or an activity, usually due to undue pettiness, resentment, or overprotectiveness.

A gatekeeper.

Similar remarks had passed the cherry-stained lips a hundred times, and this one was brought on just after the gatekeep at the north postern of Bull Joy had slyly given the wink behind "her husband's" broad back.

A gentleman stopped his horse at a toll-gate and not seeing the gatekeep went into the house.