Scotty holding a claymore
A claymore was a Scottish sword.
In 2268, Chief Engineer Montgomery Scott was dazzled by a claymore when all the weapons in the Enterprise's armory were replaced by antique weaponry. (TOS: "Day of the Dove")
The Star Trek Concordance points out that "Scotty appropriates one beautiful sword, thinking it to be an ancient Scottish claymore. He may never have seen one, however—the sword is a cutlass." the concordance is incorrect as the sword was a Basket-hilted claymore from the XVII or XVII century still carried by Highlander officer in full dress.