stockbroker
(53A) The term “stockbroker” means person— (A) with respect to which there is a customer, as defined in section 741 of this title ; and (B) that is engaged in the business of effecting transactions in securities— (i) for the account of others; or (ii) with members of the general public, from or for such person’s own account.
Source
11 USC § 101(53A)
Scoping language
None identified, default scope is assumed to be the parent (chapter 1) of this section.