Is “Quoin” a Scrabble word?
Yes
QUOIN
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 Quoin
/kɔɪn/
noun
1.Any of the corner building blocks of a building, usually larger or more ornate than the surrounding blocks.
2.The keystone of an arch.
3.A metal wedge which fits into the space between the type and the edge of a chase, and is tightened to fix the metal type in place.
Synonyms: cornerstone
verb
1.To wedge or steady with quoins.