Definition of collateral:
a security or guarantee (usually an asset
) pledged for the repayment of a loan
if one cannot procure enough fund
s to repay; marketing collateral: printed materials to present business information, e.g. leaflets, folders, brochures, fliers, fact sheets, direct mail pieces
(family) Of a family relationship that includes aunts, uncles, cousins, nieces, and nephews, as opposed to lineal
; parallel, along the same vein
"1885:The pure blood all descends from five collateral lines called Al-Khamsah (the Cinque). The book of the thousand nights and a night, Vol. 5 Richard Burton"