25 CFR 502.5 : Indians (§ 1.1 To Parts 1201-1299) — (Part 300 To Parts 1201-1299) — National Indian Gaming Commission, Department Of The Interior (Part 500 To Parts 590-599) — General Provisions (Part 500 To § 519.4) — Definitions Of This Chapter (§ 502.1 To § 502.24) — Collateral agreement.

Collateral agreement means any contract, whether or not in writing, that is related, either directly or indirectly, to a management contract, or to any rights, duties or obligations created between a tribe (or any of its members, entities, or organizations) and a management contractor or subcontractor (or any person or entity related to a management contractor or subcontractor).