The impossible happening
A miracle is something which occurs in defiance of natural law. All other unlikely events are merely happenstance.
Miracles are usually attributed to a god, or perhaps sorcery.
It's a word often used by people given to hyperbole.
I use all of the four connotations below, which are all given in answers above.
A miracle is something which occurs in defiance of natural law.
The impossible happening.
An amazing unexplainable event .
Miracle is a great poetic and emotional word. Something surprisingly wonderful, and seemingly impossible has happened.
And as a Catholic who enjoys living in the richly rewarding complexity of the created world, I tend to look at them as the Catholic Church does---as being works of God, either directly, or through the prayers and intercessions of a specific saint or saints.