Port of entry,
Port of entry, unless distinguished as being a foreign port of entry, means any place at which a customs officer is duly authorized to accept entries of merchandise, to collect duties, and to enforce the various provisions of the customs laws of the United States (whether or not such place is a port of entry as defined in title 19 of the United States Code or its associated implementing regulations). Examples of ports of entry include, but are not limited to, places designated as ports of entry or customs stations in title 19 of the Code of Federal Regulations or by the governing customs authority of that area. When shipments are transported under U.S. Customs and Border Protection immediate transportation procedures, the port of entry shall be the port of final destination.
21 CFR § 1300.02
Any term not defined in this part shall have the definition set forth in section 102 of the Act (21 U.S.C. 802), except that certain terms used in part 1316 of this chapter are defined at the beginning of each subpart of that part.