Green’s Dictionary of Slang

1. (US) regulations.

1917		Commonwealth Statutory Rules, &c 512: New Regs. 2 (2), 2A, 3A, 4A, 4B, 4C, 4D, 5 and new sub-reg. 2 (2)—Regs. 4 and 7 amended (Amended by St. Rs. 1916, No. 189), vi. 229. No. 176.—(Aliens Registration) Regs. 9 and 10 (1) repealed— No.
1920		A. Baer Beach Proproety 5 Aug. [synd. col.] Under the new regs, the girls will pack certified bathing frocks, stamped by the bureau of short weights.
1976		Popular Science Feb. 108: Some boats meet new regs now.
1988		Prentice-Hall Federal Taxes 11 56501-62692: Under the regs, a vehicle that has a base for registration purposes in a contiguous foreign country for any tax period must pay a tax of 75% of the tax otherwise imposed under Sec. 4481.
2008		Top Federal Tax Issues for 2009 Module 2 Chapter 4 4.21: Under the regs, a professional service partnership is one in which services are provided in the areas of: Medicine; Law; Engineering; Accounting; Actuarially science; or Consulting.
2017		D. Winslow The Force [ebook] The SOG knife [...] It’s against regs and illegal as shit.
2024		J. Meades Empty Wigs (t/s) 619: ‘You know well as I do that no one here has any money. Against regs’.

2. see regulars n.