collateral in WordNet English dictionary

1. a security pledged for the repayment of a loan
   collateral 
   

1. descended from a common ancestor but through different lines
   "cousins are collateral relatives"; "an indirect descendant of the Stuarts"
   collateral  indirect 
   
2. situated or running side by side
   "collateral ridges of mountains"
   collateral 
   
3. accompany, concomitant
   "collateral target damage from a bombing run"
   collateral 
   
4. serving to support or corroborate
   "collateral evidence"
   collateral  confirmative  confirming  confirmatory  corroborative  corroboratory  substantiating  substantiative  validating  validatory  verificatory  verifying