We don't have synonyms for filanders yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are flinders, flanders and filander.
(n) :
(falconry, obsolete) A disease in hawks, characterized by the presence of small thread-like worms and of filaments of coagulated blood, from the rupture of a vein.
(n) :
(falconry, obsolete) A disease in hawks, characterized by the presence of small thread-like worms and of filaments of coagulated blood, from the rupture of a vein.