Level

1. The same height at all places; parallel to the flat ground. Level ground makes it easier for row irrigation.
2. At the same height as some reference. The top of each of the pictures were at the same level.
3. Unvaried in frequency. His temperature has been at the same level for the last 24 hours.
4. Calm. He keeps a level head even under pressure.
5. A tool for finding whether a surface is level, or for creating a horizontal or vertical line in reference. He used the level to get the wall cabinets lined up right.
6. Degree or amount. The sound level is too high.
7. A floor of a multi-story building. We met on the promenade level.
8. To destroy by reducing to ground surface. The earthquake leveled the building.
9. To aim or direct (a weapon, a stare, an accusation, etc.). He leveled an accusation of fraud.
10. (gaming) One of several discrete segments of a game generally increasing in difficulty. I reached level seven after two weeks.