There are 2 results of your search for cog2.
cog1
group of people driving around in a car, usually late at night, and frequently 'around the block': We were out cogging the other night.
Contributor's comments: Also known as 'blockies' in central Victoria.
cog2
a lout, particularly one interested in fast cars: A father to his daughter: "You're not getting in a car with that bloke, he's a real cog, you can do better than that!"