to turn something over, around, or back, so a new side or heading faces out
The plain core of the word is rotation: to flip a thing onto its other side, swing it around, or send it back the way it came.
- A cake left unturned on the fire
- A hand pulled around in a chariot
- An army wheeling about
- A guarding sword whirling in every direction
- Hair gone from dark to white on diseased skin
In each, one face or direction gives way to its opposite.
This simple motion is the picture behind everything else the word does. Because turning a thing fully over inverts it, the same verb reaches the idea of tearing a city down (it is tipped upside down), of swapping one state for its reverse, and of twisting what is straight into something crooked. The senses below sort that one motion by what is turned and how far the turn goes.