Treasury Regulations (26 C.F.R.)
26 CFR § 301.7701-16 — Other terms.
For a definition of the term “withholding agent” see § 1.1441-7(a). Any other terms that are defined in section 7701 and that are not defined in §§ 301.7701-1 to 301.7701-15, inclusive, shall, when used in this chapter, have the meanings assigned to them in section 7701.
Source: official text