We don't have synonyms for curagh yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are curragh, caragh and curage.
(n) :
Alternative spelling of currach. [(nautical) An Irish boat, constructed like a coracle, and originally the same shape; now a boat of similar construction but conventional shape and large enough to be operated by up to eight oars.]
(n) :
Alternative spelling of currach. [(nautical) An Irish boat, constructed like a coracle, and originally the same shape; now a boat of similar construction but conventional shape and large enough to be operated by up to eight oars.]