1 adj. Describing the relationship between people who share a common ancestor but are descended from him through different lines of descent. See also consanguinity.
2 adj. Ancillary; subordinate but connected to the main subject, etc.
3 n. Security that is additional to the main security for a debt (or an advantage to the mortgagee that is additional to the payment of interest). For example, a lender may require as collateral the assignment of an insurance policy in addition to the principal security of a mortgage on the borrower's home.