Pronunciation: (kun-jest'),[key] —v.t. 1. to fill to excess; overcrowd or overburden; clog: The subway entrance was so congested that no one could move. 2. Pathol.to cause an unnatural accumulation of blood or other fluid in (a body part or blood vessel): The cold congested her sinuses. 3. Obs.to heap together.
—v.i. to become congested: His throat congested with phlegm.