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