EntityQ423555· pop 9· linked from 5 articlesCogSign in to saveA cog is a tooth of a gear or cogwheel or the gear itself.Article7 sectionsContentsScience and engineeringEntertainment and mediaFictional charactersMusicOrganizationsOther usesSee alsoA cog is a tooth of a gear or cogwheel or the gear itself.Cog, COG, CoG, or The Cog may also refer to:Read full article (9 paragraphs)ConnectionsRepublic of the CongoCountrycogwheelEntity