Dealer. A person required to hold a permit to deal in specially denatured spirits for resale to persons authorized to purchase or receive specially denatured spirits in accordance with this part. The term does not include a person who only buys and sells specially denatured spirits which that person never physically receives or intends to receive.
27 CFR § 20.11
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.