(of a road or place) so crowded with traffic or people as to hinder or prevent freedom of movement

the congested streets of the West End

the streets are often heavily congested with traffic

(of a part of the body) abnormally full of blood

congested arteries

crowd (a road or place) so as to hinder or prevent freedom of movement

uncontrolled development will congest our streets

crowds of shoppers were congesting the outlets and malls

the traffic flow will congest in this area

cause (a part of the body) to fill abnormally with blood or other fluid

high-pressured adrenaline congested my veins

the tonsils congest and swell