Reg
name, noun, slang ·Moderate ·High school level
Definitions
- 1 A regular. informal
"I've been going to that chat room for months, and I know most of the regs by now."
- 2 A hard surface of rock fragments set in a sandy matrix, found in some hot deserts; regolith, stony desert. countable, uncountable
"As I say for half a mile round the fort it is rutted gravel. We call this sort of gravelly stuff reg."
- 3 A regulation. informal
"It makes me sad to see a prisoner complain about another prisoner not writing. His or her mailroom (or yours!) might have just tossed the letter; besides the rules and regs for prisoners writing each other are different in every state, and may change for no reason. Or, the rules may be ignored (especially for gay prisoners) also, even prisons that do accept mail from other prisoners, may not deliver it to people in isolation or on certain security levels."
- 4 registrar
- 5 registration
Show 2 more definitions
- 6 registration; Clipping of registration number. UK, abbreviation, alt-of, clipping, informal
"What's your reg and where are you parked?"
- 7 registry
- 1 A diminutive of the male given name Reginald.
Example
More examples"I've been going to that chat room for months, and I know most of the regs by now."
Etymology
Clippings.
From regolith.
Shortening.
Related phrases
More for "reg"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.