From Longman Dictionary of Contemporary Englishbranch off phrasal verb1 SEPARATEif a road, passage, railway etc branches off from another road etc, it separates from it and goes in a different direction SYN fork off from a passage branching off from the main tunnel2 British EnglishTURN to leave a main road SYN fork off from/into We branched off from the main road and turned down a country lane.3 TALK TO somebodyto start talking about something different from what you were talking about before into Then the conversation branched off into a discussion about movies. → branch→ See Verb table
