5 C.F.R. § 1653.11
Alimony means the payment of funds for the support and maintenance of a spouse or former spouse. Alimony includes separate maintenance, alimony pendente lite, maintenance, and spousal support. Alimony can also include attorney fees, interest, and court costs, but only if these items are expressly made recoverable by qualifying legal process, as described in § 1653.12 .
Child support means payment of funds for the support and maintenance of a child or children of the participant. Child support includes payments to provide for health care, education, recreation, clothing, or to meet other specific needs of a child or children. Child support can also include attorney fees, interest, and court costs, but only if these items are expressly made recoverable by qualifying legal process, as described in § 1653.12 .
Competent authority means a court or an administrative agency of competent jurisdiction in any State, territory or possession of the United States; a court or administrative agency of competent jurisdiction in any foreign country with which the United States has entered into an agreement that requires the United States to honor the process; or an authorized official pursuant to an order of such a court or an administrative agency of competent jurisdiction pursuant to state or local law.
Legal process means a writ, order, summons, or other similar process in the nature of a garnishment, which is brought to enforce a participant's legal obligations to pay child support or alimony currently.
5 C.F.R. §1653.11