The term 'spokes, e.g.' refers to a spoke of a wheel, which is a rod or bar connecting the center of a wheel to its outer edge. The crossword solutions for this term are 'RADII' (5 letters) and 'radiuses' (8 letters). RADII are the plural form of radius, which is a line segment extending from the center of a circle to its circumference. Radiuses is another plural form of radius, which is used less commonly than RADII.