The ship lurched in the storm. The car gave a start and then lurched forward.
An example of lurch is where you figuratively leave someone when you promise to pick up your friend's kids from school and then call five minutes before the bell and cancel.
An example of lurch is when someone unexpectedly and rapidly falls forward.
An example of lurch is when you are intoxicated and stumbling around.
The train lurched and moved away from the platform.