motor

A motor is what makes things go. Think of the engine in a car or the device that turns the blades of a fan: it changes energy into motion. But "motor" is not just about machines. It can also describe movement in the body, as in motor skills or motor control.

You might say a boat is powered by a motor, or that a child is developing fine motor skills. The word comes from the Latin motorem, meaning "mover." So when you hear this word, the main idea is usually simple: something is causing movement.

The word "motor" most commonly refers to a machine that converts energy into motion. It powers many kinds of equipment, including cars, boats, fans, pumps, and factory machines. In everyday speech, people often use "motor" to mean the engine in a car or another vehicle. You might hear a mechanic say, "There's a problem with the motor."

The word also appears in biology and medicine. "Motor neurons" are nerve cells that carry signals to muscles, helping the body move. That is why we talk about motor skills—actions that need controlled movement, such as writing, buttoning a shirt, catching a ball, or tying your shoes. Doctors may also talk about motor function when they check how well someone can move after an illness or injury.

In some contexts, especially formal writing, "motor" can also mean a force that drives action or change. For example, a writer might describe trade as a motor of economic growth. This use is less common in everyday conversation, but the idea is still the same: something is making progress happen.

The word comes from the Latin motorem, from movere, meaning "to move." Whether it refers to a machine, body movement, or a force behind change, the core meaning stays close to movement and power.