Is “Reg” a Scrabble word?
Yes
REG
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Reg
/ɹɛdʒ/
noun
1.A regular.
“I've been going to that chat room for months, and I know most of the regs by now.”
2.A regulation.
3.Registrar