A less extreme view is that miracles may be defined as when God does something unexpected, changing the natural flow of events. For example, a group of believers pray for a man suffering with cancer. The cancer goes into remission or even disappears. God unexpectantly heals the man and they say it was a miracle. Still other committed Christians refer to more common experiences as miracles.
Many people use the term loosely, referring to everyday event.
We need to discern what truly constitutes a miracle. Not long ago I was playing golf with a friend. Any kid knows that you can skip a rock across water. The same is true with a golf ball. It can be explained in terms of spin and trajectory.