plateau

noun

1. A largely level expanse of land at a high elevation; tableland.
2. A comparatively stable level after a period of increase. (of a varying quantity)

   “Childhood obesity, rising for more than two decades, appears to have hit a plateau, a potentially significant milestone in the battle against excessive weight gain among children.”

3. (dated)An ornamental dish for the table; a tray or salver.
4. A notable level of attainment or achievement.
5. Any of several distinct, dose-dependent stages of a dextromethorphan trip.

verb

1. (intransitive)To reach a stable level after a period of increase; to level off.

   “Mr. [Jensen] Huang is nevertheless correct. Adoption has plateaued.”

name

1. A state of Nigeria in the North Central geopolitical zone. Capital and largest city: Jos.
2. A surname
3. Former name of Lusong: a barangay of Buenavista, Bohol, Philippines.