Is “Cog” a Scrabble word?
Yes
COG
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 Cog
/kɒɡ/
noun
1.A tooth on a gear.
2.A gear; a cogwheel.
3.An unimportant individual in a greater system.
verb
1.To furnish with a cog or cogs.