tri·skel·i·on 
(trī-skĕlē-ən, trĭ-) also tri·skele (trīskēl′, trĭskēl′)
(trī-skĕlē-ən, trĭ-) also tri·skele (trīskēl′, trĭskēl′)n. pl. tri·skel·i·a (-skĕlē-ə) also tri·skeles
A figure consisting of three curved lines or branches, or three stylized human arms or legs, radiating from a common center.
[New Latin, from Greek triskelēs, three-legged : tri-, tri- + skelos, leg.]
triskelion3rd-century bc Roman bronze appliqué