/ ˈdɒsieɪ; NAmE ˈdɔːs-; ˈdɑːs-/ noun
dossier (on sb/sth) a collection of documents that contain information about a person, an event or a subject
SYN file :
to assemble / compile a dossier
We have a dossier on him.
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WORD ORIGIN
late 19th cent.: from French , denoting a bundle of papers with a label on the back, from dos back, based on Latin dorsum .