Top Definition
a three lane highway; used specifically by people waving at others on long roadtrips
Hey T-Bone, go to the middle of the trilane, we want to wave to people on both sides.
by Thomas Y. July 20, 2008
4 Words related to Trilane

Free Daily Email

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

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×