Is “Caprock” a Scrabble word?
Yes
CAPROCK
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 Caprock
noun
1.A harder or more resistant rock type overlying a weaker or less resistant rock type.