sandworm

Short definition from Wiktionary

Noun

1. 1
   A lugworm, of species Arenicola marina.
2. 2
   A clam worm or ragworm, of species Alitta virens.
3. 3
   Hookworm larvae, especially of Ancylostoma braziliense, which cause cutaneous larva migrans.
4. 4
   A chigoe, a flea of species Tunga penetrans.