Floor broker. This term means any person:
(1) Who, in or surrounding any pit, ring, post or other place provided by a contract market for the meeting of persons similarly engaged, shall purchase or sell for any other person -
(i) Any commodity for future delivery, security futures product, or swap; or
(ii) Any commodity option authorized under section 4c of the Act; or
(2) Who is registered with the Commission as a floor broker.
17 CFR § 1.3
Words used in the singular form in the rules and regulations in this chapter shall be deemed to import the plural and vice versa, as the context may require. The following terms, as used in the Commodity Exchange Act, or in the rules and regulations in this chapter, shall have the meanings hereby assigned to them, unless the context otherwise requires: