Limitation. For the purposes of this section, the term money services business shall not include:
(i) A bank or foreign bank;
(ii) A person registered with, and functionally regulated or examined by, the SEC or the CFTC, or a foreign financial agency that engages in financial activities that, if conducted in the United States, would require the foreign financial agency to be registered with the SEC or CFTC; or
(iii) A natural person who engages in an activity identified in paragraphs (ff)(1) through (ff)(5) of this section on an infrequent basis and not for gain or profit.
31 CFR § 1010.100
When used in this chapter and in forms prescribed under this chapter, where not otherwise distinctly expressed or manifestly incompatible with the intent thereof, terms shall have the meanings ascribed in this subpart. Terms applicable to a particular type of financial institution or specific part or subpart of this chapter are located in that part or subpart. Terms may have different meanings in different parts or subparts.