jerk•wa•terPronunciation: ( jûrk'wô"tur, -wot"ur), [key]
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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.