Is “Mac” a Scrabble word?
Yes
MAC
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 Mac
/mæk/
noun
1.A waterproof long coat made of rubberized cloth.
2.By extension, any waterproof coat or raincoat.
3.Waterproof rubberized cloth.
Synonyms: mac, mack, raincoat