Definition of "Depress" :

verb: lessen the activity or force of

"The rising inflation depressed the economy."

verb: press down

"Depress the space key."

verb: cause to drop or sink

"The lack of rain had depressed the water level in the reservoir."

verb: lower someone's spirits; make downhearted

"These news depressed her."

verb: lower (prices or markets)

"The glut of oil depressed gas prices."