As used in section 1 of P.L. 1977, c.281 (C.52:18A-90.4):
"Branch office" means an office at a fixed location other than a principal office, however designated, at which any business that may be conducted in a principal office of a bank may be transacted.
"Clearinghouse" means an association of banks or other payors regularly settling mutual claims, accounts and other items such as securities, payments and income.
"Custodian," "primary custodian," "fiscal agent" and "primary fiscal agent" means a bank which is selected by the State Treasurer to perform fiduciary functions in the maintenance of public trust funds and assets.
"Depository" means a separately incorporated bank or association of banks which serves as a temporary trustee for securities on behalf of a custodian, sub-custodian, fiscal agent or sub-fiscal agent.
"Principal office" means the headquarters of a bank which is its principal place of business.
"Sub-custodian" or "sub-fiscal agent" means a bank, located in any state or country, to which a primary custodian or primary fiscal agent may delegate its duties and responsibilities.
N.J.S. § 52:18A-90.4a