One's role or rightful place; stead or authority.
The interest, benefit, or wellbeing of someone or something.
A defense or safeguard.
A defensive wall or rampart.
A breakwater.
Any means of defence or security.
The planking or plating along the sides of a nautical vessel above her gunwale that reduces the likelihood of seas washing over the gunwales and people being washed overboard.
To fortify something with a wall or rampart.
To provide protection of defense for something.