Is “Coign” a Scrabble word?
Yes
COIGN
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 Coign
/kɔɪn/
noun
1.A projecting corner or angle; a cornerstone.
2.The keystone of an arch.
3.A wedge used in typesetting.