To turn means to "Move in a circular direction". Here are some examples in sentences:
-I had to turn to see the man behind me.
-The girl made a graceful turn in her dance recital.
It can also be used to say that something has "turned itself around" or "changed completely". For example:
-The rude boy turned himself around after joining the military; he greeted me politely in the store.
I saw them turn the corner.
leaves turn colours in Autumn.
She is the seventh person in line to receive the award.
Please DO remember that you can use it in a sentence.
My mother yelled to me, "Turn down that volume!".
the man made a reckless turn and crashed.
To use the phrase "turn turtle" is nasty
Please turn down the volume.
I will call the authorities if they don't turn their music down.
Maladjusted young boys can often turn to crime.
definition: to revolve and turn like a wheel. sentence: The barrel circumrotated down the hill.
You not only use the oars to move forward, but you can use an oar to steer or turn the boat.