n.
1.an unknown and unpredictable phenomenon that causes an event to result one way rather than another
2.a large amount of wealth or prosperity
3.an unknown and unpredictable phenomenon that leads to a favorable outcome
4.your overall circumstances or condition in life (including everything that happens to you)
Idiom of the Day
press one's luck
to depend too much on luck, to expect to continue to be lucky
My uncle is pressing his luck if he thinks that he will continue to make a lot of money on the stock market.