jumpout

noun4

1. •
   (Australia) An unofficial trial race.

   • The few who attended Tuesday's important Lightning Stakes jumpouts at Flemington on Tuesday may have been put off by Swick's lethargic display. — 2009
2. •
   (US, slang) A plainclothes narcotics officer.

   • “Well, I figured if the jumpouts came they wouldn′t search her,” says Rosa Lee. “They′d search me but they wouldn′t find nothing.” — 1997
3. •
   A separation from a groove, track, etc., that otherwise constrains motion.

   • Encroachment into potential flood avenues resulted in jumpouts, flooding, and extensive siltation. — 1995
4. •
   A ramp or other construction that allows wildlife to exit safely from a freeway, highway, etc.