A defensive wall or rampart.
A defense or safeguard.
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.
An obstruction placed in front or on the flank of a fortification, to impede an enemy's approach.
An obstruction of cables and spars across a river or harbour entrance.
The condition of being deeply involved and intricated (with politics, a group, another person, etc.)
The condition, or an instance, of being romantically or sexually involved with another person; an affair.
The act of entangling.