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.
A means of keeping or remaining safe.
Coverage.
The process of keeping (something or someone) safe.
The state of being safe.
An instance of a security token associated with a resource (such as a file).
Restrictions on foreign competitors which limit their ability to compete with domestic producers of goods or services.
A means, such as a condom, of preventing pregnancy or sexually transmitted disease.
Immunity from harm, obtained by illegal payments, as bribery or extortion.