1. a small, unimportant town, esp. one along a railroad line.
2. a short talk from the rear platform of a train, esp. during a political campaign.
3. a brief appearance, single performance, or the like, in a small town, as during a political campaign or theatrical tour.
—v.i. 1. to campaign for political office by traveling around the country, originally by train, stopping at small communities to address voters.
2. to take a trip consisting of several brief, usually overnight, stops.
—adj. occurring at a whistle stop; consisting of whistle stops: a whistle-stop speech; a whistle-stop tour of the Northwest.