We don't have synonyms for firbank yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are fairbank.
(n) :
A locality and civil parish (without a council) in Westmorland and Furness, Cumbria, England, previously in South Lakeland district (OS grid ref SD6293).
(n) :
A locality and civil parish (without a council) in Westmorland and Furness, Cumbria, England, previously in South Lakeland district (OS grid ref SD6293).