dossierdos·si·er /ˈdɒsieɪˈdɒːsjeɪ, ˈdɑː-/ noun [countableC] a collection of written papers which contain detailed information about a particular subject or personShe had a dossier of complaints about her neighbours.
They prepared a 20-page dossier detailing reasons why the new road was needed.
The FBI have kept a dossier on him since his radical student days.