Source : Webster's Revised Unabridged Dictionary (1913)

Spindle-shaped \Spin"dle-shaped`\, a.
   1. Having the shape of a spindle.

   2. (Bot.) Thickest in the middle, and tapering to both ends;
      fusiform; -- applied chiefly to roots.

Source : WordNet®

spindle-shaped
     adj : tapering at each end [syn: {fusiform}, {cigar-shaped}]