38 U.S.C. § 1901

1. (1)The term “insurance” means National Service Life Insurance.
2. (2)The terms “widow” or “widower” mean a person who was the lawful spouse of the insured at the maturity of the insurance.
3. (3)The term “child” means a legitimate child, an adopted child, and, if designated as beneficiary by the insured, a stepchild or an illegitimate child.
4. (4)The terms “parent”, “father”, and “mother” mean a father, mother, father through adoption, mother through adoption, persons who have stood in loco parentis to a member of the military or naval forces at any time before entry into active service for a period of not less than one year, and a step­parent, if designated as beneficiary by the insured.