The term “commerce” means commerce between any State, any territory, or the District of Columbia, and any place outside thereof; or within any territory not organized with a legislative body, or the District of Columbia.

Except as otherwise provided in this chapter, the term “State” means any State of the United States and the Commonwealth of Puerto Rico.

The term “territory” means Guam, the Virgin Islands of the United States, American Samoa, and any other territory or possession of the United States, excluding the Canal Zone.

The term “United States” means the States, the District of Columbia, and the territories of the United States.

The term “poultry” means any domesticated bird, whether live or dead.

The term “poultry product” means any poultry carcass, or part thereof; or any product which is made wholly or in part from any poultry carcass or part thereof, excepting products which contain poultry ingredients only in a relatively small proportion or historically have not been considered by consumers as products of the poultry food industry, and which are exempted by the Secretary from definition as a poultry product under such conditions as the Secretary may prescribe to assure that the poultry ingredients in such products are not adulterated and that such products are not represented as poultry products.