Is “Ripstop” a Scrabble word?
Yes
RIPSTOP
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 Ripstop
noun
1.A thick reinforcement thread woven into fabric to provide resistance against tearing.