We don't have synonyms for shipworms yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are shipworm, whipworms and whipworm.
(n) :
Any of several wormlike marine molluscs (not true worms) of the family Teredinidae that bore through the wooden hulls of ships and other woody material immersed in salt water; specifically, the naval shipworm or turu (Teredo navalis), the type species of the genus Teredo.
(n) :
Any of several wormlike marine molluscs (not true worms) of the family Teredinidae that bore through the wooden hulls of ships and other woody material immersed in salt water; specifically, the naval shipworm or turu (Teredo navalis), the type species of the genus Teredo.