Restoration.
Restoration. Restoring to the original state (except that the restored material may or may not contain denaturants to the same extent as the original material) of recovered denatured alcohol, recovered specially denatured rum, or recovered articles containing denatured alcohol or specially denatured rum. Restoration includes bringing the alcohol content of the recovered product to 190 of proof or more or to not less than the original proof if less than 190. Restoration also includes the removal of foreign materials by any suitable means.
Source
27 CFR § 20.11
Scoping language
When used in this part and in forms prescribed under this part, the following terms have the meanings given in this section. Words in the plural form include the singular, and vice versa, and words importing the masculine gender include the feminine. The terms includes and including do not exclude things not enumerated which are in the same general class.