What did you have in mind? It could be as simple as putting a couple of stones into an athletic sock. Really, a weapon of any sort isn't wholly defensive - they have offensive applications, as well.
A submarine can be used as either a defensive or offensive weapon. Also note that it is often classified as a deterrent weapon.
Any weapon can be defensive or offensive from a rock to a hammer to a car, etc..
to throw big stones at enemies in medieval time.
There are two ways to get your weapon enchanted or "special." The sigil stones you get from closing oblivion gates have two enchantments on them: an offesive one for your weapon or a defensive one for your armor. If you are the Arch-Mage, then you can use the Altar of Enchanting to enchant your weapon, provided you have a filled soul gem available.
They were a powerfull defensive weapon.
The siege weapon was used to defeat enemy defensive fortifications .
The tank.
If they are in a case and to and from a sanctioned event. You can not carry them in the open or as a replacement for a defensive weapon.
it is because you probably have higher defensive weapon so you don't need it or if it is a moscow weapon you can't use it in cuba. from Reshman Siva
weapon+poison
currently the strongest waepon in mafia wars is Crocodillo APC earned in Cuba after finishing the El Padrino job tier.
Installing heavy armor plating, advanced weapon systems, and defensive measures such as shields and countermeasures can turn a ship into a fortress to enhance its defensive capabilities against enemy attacks.