Top Definition
The tendency of slow moving vehicles to cluster on the highway, impeding traffic flow.
The whole trip was one highway clot after minute we're rolling along at 80 the next we were fighting our way through a highway clot slowed to 40.
by chuck-a-saurus January 06, 2012
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.