Is “Rimrock” a Scrabble word?
Yes
RIMROCK
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 Rimrock
noun
1.An outcrop of hard rock, often in the form of a cliff at the edge of a plateau, that forms the margin of a gravel deposit
verb
1.To drive (animals) over a cliff edge.