Depress

1. To cast a gloom upon; to sadden; as, his spirits were depressed.
2. To bring down or humble; to abase, as pride.
3. To lessen in price; to cause to decline in value; to cheapen; to depreciate.
4. To lessen the activity of; to make dull; embarrass, as trade, commerce, etc.
5. To press down; to cause to sink; to let fall; to lower; as, to depress the muzzle of a gun; to depress the eyes.
6. To reduce (an equation) in a lower degree.
7. Having the middle lower than the border; concave.