The verb depress has 5 senses (first 2 from tagged texts)
1. (3) depress, deject, cast down, get down, dismay, dispirit, demoralize, demoralise -- (lower someone's spirits; make downhearted; "These news depressed her"; "The bad state of her child's health demoralizes her")
2. (1) depress -- (lower (prices or markets); "The glut of oil depressed gas prices")
3. lower, depress -- (cause to drop or sink; "The lack of rain had depressed the water level in the reservoir")
4. press down, depress -- (press down; "Depress the space key")
5. depress -- (lessen the activity or force of; "The rising inflation depressed the economy")