Triskell, triskel, triskele, triskelion, triskellian.
From the Greek for "three legged".
Symbol of Sicily, the Isle of Man, Brittany, and me.
Mine is the Celtic spiral triskell, found in Brittany and Cornwall and other Celtic areas, and originally acquired by me at the Pointe du Raz in Brittany sometime around 1988. My triskell use has nothing to do with any of the other associations listed on the Wikipedia page on the subject.