Source : Webster's Revised Unabridged Dictionary (1913)

Worm-shaped \Worm"-shaped`\, a.
   Shaped like a worm; ?hick and almost cylindrical, but
   variously curved or bent; as, a worm-shaped root.

Source : WordNet®

worm-shaped
     adj : resembling a worm; long and thin and cylindrical [syn: {vermiform}]