Related; indirect; not bearing immediately upon an issue. The property pledged or given as a security interest, or a guarantee for payment of a debt, that will be taken or kept by the creditor in case of a default on the original debt.
That which is collateral is not of the essence. Collateral facts are facts that are not independently provable from, and that are not directly relevant to, issues in a CAUSE OF ACTION. Collateral heirs are those individuals who are not directly related to the deceased through consanguinity. Similarly, collateral ancestors are uncles and aunts, as contrasted with direct ancestors, such as parents and grandparents.