Definitions from Wiktionary ( )

▸ noun:  The hindrance or blockage of the passage of something, for example a fluid, mixture, traffic, people, etc. (due to an excess of this or due to a partial or complete obstruction), resulting in overfilling or overcrowding.
▸ noun:  An accumulation or buildup, the act of gathering into a heap or mass.
▸ noun:  (medicine) Blocking up of the capillary and other blood vessels, etc., in any locality or organ (often producing other morbid symptoms); local hypermic, active or passive.
▸ noun:  An excess or accumulation of something.
▸ noun:  An excess of traffic; usually not a complete standstill of traffic, so usually not synonymous with traffic jam.
▸ noun:  (medicine) An excess of mucus or fluid in the respiratory system; congestion of the lungs, or nasal congestion.
▸ noun:  Edema, water retention, swelling, enlargement of a body part because of fluid retention in tissues and vessels.

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