depression

a state of depression and anhedonia so severe as to require clinical intervention

sad feelings of gloom and inadequacy

a period during the 1930s when there was a worldwide economic depression and mass unemployment

an air mass of lower pressure; often brings precipitation

a concavity in a surface produced by pressing

a long-term economic state characterized by unemployment and low prices and low levels of trade and investment

a sunken or depressed geological formation

a mental state characterized by a pessimistic sense of inadequacy and a despondent lack of activity

angular distance below the horizon (especially of a celestial object)

pushing down

“depression of the space bar on the typewriter”