(1):
(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.
(2):
(n.) The operation of reducing to a lower degree; - said of equations.
(3):
(n.) Diminution, as of trade, etc.; inactivity; dullness.
(4):
(n.) Dejection; despondency; lowness.
(5):
(n.) Humiliation; abasement, as of pride.
(6):
(n.) The act of depressing.
(7):
(n.) The state of being depressed; a sinking.
(8):
(n.) A method of operating for cataract; couching. See Couch, v. t., 8.
(9):
(n.) The angular distance of a celestial object below the horizon.