Origin: French suffix -ier
Dossier has 2 different meanings across 1 category:
a collection of papers containing detailed information about a particular person or subject (usually a person's record)
"The investigator spent hours reviewing the suspect's confidential dossier to uncover any past criminal activity."
A collection of papers and/or other sources, containing detailed information about a particular person or subject, together with a synopsis of their content.
"The investigator spent hours reviewing the confidential dossier on the suspect to verify every detail before filing the report."