Eyeopener (noun)

1. Something that is surprising or revealing, serving to open one's eyes to a new understanding or awareness.
2. A drink, typically an alcoholic beverage, consumed early in the morning.

Origin:

First known use: 1891.

Examples:

1. The report on corruption in the company was an eyeopener for the board of directors.
2. Her speech was an eyeopener on the state of the education system.
3. He had an eyeopener before heading to work.
4. The experience was an eye opener for her, she never knew things were that bad.
5. The statistics on poverty in the area were an eyeopener for the city council.