Cog | Mean of cog in English Dictionary

/ˈkɑːg/

• Noun
• any one of the small parts that stick out on the outer edge of a wheel or gear and that allow it to turn along with another wheel or gear
• someone or something that is thought of as being like a part of a machine
1. He was an important cog on that championship team.
2. My brother is just a minor cog in the Hollywood machine. He works as an electrician for a film studio.
3. He's just a cog in the machine.