tri·skel·i·on 
(tr
ī-sk
ĕl
ē-
ən, tr
ĭ-) also
tri·skele (tr
īsk
ēl
′, tr
ĭs
k
ēl
′)
n. pl. tri·skel·i·a (-sk
ĕl
ē-
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