Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Foodfilbertfil‧bert /ˈfɪlbət $ -bərt/ noun [countable] especially American English DFa hazelnutOrigin filbert (1300-1400) Anglo-French philbert, from St Philibert, whose day is August 22, when nuts are starting to be ready to eat ldoceonline.com