The Collaborative International Dictionary of English v.0.48:

Straddle \Strad"dle\, v. i. [imp. & p. p. Straddled; p. pr. &
   vb. n. Straddling.] [Freq. from the root of stride.]
   1. To part the legs wide; to stand or to walk with the legs
      far apart.
      [1913 Webster]

   2. To stand with the ends staggered; -- said of the spokes of
      a wagon wheel where they join the hub.
      [1913 Webster]