名词

1. 堵塞;拥堵
If there is congestion in a place, the place is extremely crowded and blocked with traffic or people.

2. (身体部位的)堵塞，充血，淤血
Congestion in a part of the body is a medical condition in which the part becomes blocked.

1. excessive crowding

e.g. traffic congestion

Synonym: over-crowding

2. excessive accumulation of blood or other fluid in a body part