|bȯrdə|rō noun
( plural bordereaux -ō(z))
Etymology: French, from Middle French, from bord border, from Old French bort — more at border
1. : a detailed note or memorandum of account ; especially : one containing an enumeration of documents
2. : a paper setting forth a description of reinsured risks that is prepared by an original underwriter for the information of the reinsuring company