Noah Webster's New International Dictionary of the English Language

1. (n.) The act of depressing.

2. (n.) The state of being depressed; a sinking.

3. (n.) A falling in of the surface; a sinking below its true place; a cavity or hollow; as, roughness consists in little protuberances and depressions.

4. (n.) Humiliation; abasement, as of pride.

5. (n.) Dejection; despondency; lowness.

6. (n.) Diminution, as of trade, etc.; inactivity; dullness.

7. (n.) The angular distance of a celestial object below the horizon.

8. (n.) The operation of reducing to a lower degree; -- said of equations.

9. (n.) A method of operating for cataract; couching. See Couch, v. t., 8.