['triski:l]
n.
(从中心点辐射的) 三曲枝图
三曲腿图三曲臂图

[ noun ]
a figure consisting of three stylized human arms or legs (or three bent lines) radiating from a center
<noun.artifact>

Triskelion \Tris*kel"i*on\, or Triskele \Tris"kele\, n. [Gr. ?
three-legged. See {Tri-}; {Isosceles}.]
A figure composed of three branches, usually curved,
radiating from a center, as the figure composed of three
human legs, with bent knees, which has long been used as a
badge or symbol of Sicily and of the Isle of Man.
[Webster 1913 Suppl.]