阻塞

The pipe is clogged with grease.

The crowds jammed the streets, and no cars could pass.

Old boxes encumbered the fire escape.

There is a terrible jam at the superhighway exit.

The stoppage of the artery may lead to a heart failure.

traffic jam; holdup; snarl-up

cause a stoppage of the railways

block the transportation

block the channels to get criticisms and suggestions from the people

block the traffic; jam traffic

block the pipe