Is “Shiplap” a Scrabble word?
Yes
SHIPLAP
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 Shiplap
noun
1.A type of wooden board that has rabbets to allow them to be overlapped.