Is “Arb” a Scrabble word?
Yes
ARB
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 Arb
noun
1.The act of or potential for arbitrage.
2.One who engages in arbitrage; an arbitrageur.
3.An arboretum.
verb
1.To engage in arbitrage.