Is “Rein” a Scrabble word?
Yes
REIN
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 Rein
/ɹeɪn/
noun
1.A strap or rope attached to a bridle or bit, used to control a horse, animal or young child.
2.An instrument or means of curbing, restraining, or governing.
verb
1.To direct or stop a horse by using reins.
2.To restrain; to control; to check.
3.To obey directions given with the reins.