Illustration of triskelion
triskelion
noun
tri·skel·i·on trī-ˈske-lē-ən 
tri-
variants or triskele
ˈtrī-ˌskēl
ˈtri-
: a figure composed of three usually curved or bent branches radiating from a center
Example Sentences
Recent Examples on the Web But even amongst these exceptions, a triskelion animal with three locomotory limbs, has never appeared. 
Grrlscientist, Forbes, 18 May 2022
Grrlscientist, Forbes, 18 May 2022 Word History
Etymology
triskelion from New Latin, from Greek triskelēs three-legged, from tri- + skelos leg; triskele from Greek triskelēs — more at isosceles
First Known Use
circa 1857, in the meaning defined above