- Informal. insignificant and out-of-the-way: a jerkwater town.
- (formerly) off the main line: a jerkwater train.
- (formerly) a train not running on the main line.
"After an unprovoked attack on Red and White Bundle by Tilantongo raised hostilities to a fever, the warring parties agreed to meet in a secret mountain cave with the Priestess of the Dead, a powerful oracle who had stripped away the flesh from her jaw, giving her a terrifying, skull-like appearance... To his dismay, the priestess sided with Tilantongo's enemies and ordered 8-Deer, Tilantongo's champion, to exile himself a hundred miles away, in a jerkwater town on the Pacific called Tututepec."
- Charles Mann, 1491: New Revelations of the Americas Before Columbus