Spokes, e.g

• Some geometry class lines
• Circle segments
• Circle segments (Var.)

Wiktionary Word definitions in Wiktionary
n. (plural of radius English)

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Radius \Ra"di*us\ (r[=a]"d[i^]*[u^]s), n.; pl. L. Radii (r[=a]"d[i^]*[imac]); E. Radiuses (r[=a]"d[i^]*[u^]s*[e^]z). [L., a staff, rod, spoke of a wheel, radius, ray. See Ray a divergent line.] (Geom.) A right line drawn or extending from the center of ...