over
1.
to make sth change position so that the other side is facing towards the outside or the top :
Brown the meat on one side, then turn it over and brown the other side.
2.
to think about sth carefully :
She kept turning over the events of the day in her mind.
3.
( of a shop / store ) to sell goods and replace them :
A supermarket will turn over its stock very rapidly.
—related noun turnover
4.
( informal ) to steal from a place :
Burglars had turned the house over.
5.
to make an engine start running