permit

the act of giving a formal (usually written) authorization

large game fish; found in waters of the West Indies

a legal document giving official permission to do something

consent to, give permission

She permitted her son to visit her estranged husband

I won't let the police search her basement

allow the presence of or allow (an activity) without opposing or prohibiting

We don't allow dogs here

Children are not permitted beyond this point

make it possible through a specific action or lack of action for something to happen

This permits the water to rush in

This sealed door won't allow the water come into the basement