
1) American invention 2) Avex Trax single 3) Fictional energy weapon 4) Fictional sword 5) Jedi protector 6) Weapon first used in 1977 7) Weapon with a distinctive hum
Found on
https://www.crosswordclues.com/clue/lightsaber

The lightsaber`s energy blade cuts or burns/melts through most substances without resistance. It leaves cauterized wounds in flesh, but can be deflected by another lightsaber`s blade, or by energy shields. Some exotic saber-proof materials have been introduced in the Expanded Universe. An active lightsaber gives off a distinctive hum, which rise.....
Found on
http://en.wikipedia.org/wiki/Lightsaber

A blade made of pure energy wielded by Force-users in the Star Wars universe.
Found on
https://www.liveabout.com/star-wars-glossary-2958005
No exact match found.