from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A side road taken to avoid the tolls or traffic of a turnpike.
- intransitive v. To travel on side roads, avoiding turnpikes.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To take an unnecessarily long route in order to avoid traffic and/or toll booths.
from The Century Dictionary and Cyclopedia
- n. A road or byway so situated, by intent or not, that travelers may avoid paying toll on the turnpike which is the main thoroughfare. Such a road may be closed by injunction.
shun + (turn)pike.(American Heritage® Dictionary of the English Language, Fourth Edition)
Blend of shun and turnpike (Wiktionary)