means The act of changing direction, position, or state — rotating, bending, or becoming something other than what you were.

from From Old English 'turnian' and 'tyrnan,' to rotate or revolve, borrowed early from Latin 'tornare' — to turn on a lathe — which itself comes from 'tornus,' a turner's wheel, a cousin of the Greek 'tornos,' a tool for drawing circles. So the word's deepest root is literally a craftsman's instrument spinning wood into shape: every 'turning' still carries that quiet sense of something being worked round.