a subordinate who performs an important but routine function
"he was a small cog in a large machine"
A tooth on a gear.
"The engineer adjusted the CG on the drone to ensure stable flight during high winds."
A ship of burden, or war with a round, bulky hull.
A trick or deception; a falsehood.
A small fishing boat.
Initialism of center of gravity.
In plain English: It's the point where an object's weight is evenly balanced.
"The sailboat felt unstable until we adjusted the weight to find its cog."
Usage: Cog (noun) refers to the center of gravity, often used in physics or engineering to describe the point where an object's weight is evenly distributed. You might say, "The ship's cog shifted during the storm."
roll steel ingots
"The factory workers carefully placed each hot cog onto the conveyor belt to be rolled into steel sheets."
join pieces of wood with cogs
"The carpenter carefully aligned the two planks so their interlocking cogs would hold the fence together without any nails."
To furnish with a cog or cogs.
"The detective found a screwdriver and wire in his pocket, proving he had rigged the dice at the casino floor before the big game began."
To load (a die) so that it can be used to cheat.
In plain English: To cog means to tamper with something, like a die, to make it unfair.
"He suspected the gambler had cogged the dice to ensure he always won."
Usage: Use "cog" when referring specifically to manipulating a die or similar device to favor certain outcomes, typically in gambling. It implies deliberate and mechanical alteration for dishonest gain.
Initialism of Church of God: numerous, mostly unrelated Christian denominations.
"The local library's history section features a vast collection of books covering every COG denomination in the state."