Freemason
From Longman Dictionary of Contemporary EnglishRelated topics: OrganizationsFreemasonFree‧ma‧son /ˈfriːˌmeɪsən, ˌfriːˈmeɪsən/ (also Mason) noun [countable] SSOa man who belongs to a secret society in which each member helps the other members to become successfulExamples from the CorpusFreemason• So far as it is known, Noble has been the only born-deaf person ever to be a Freemason in Britain.• People relate to each other secretly, like Freemasons.