traffic jam

:  the vehicles, pedestrians, ships, or planes moving along a route

:  congestion of vehicles

:  the movement (as of vehicles or pedestrians) through an area or along a route

:  to carry on traffic

:  to concentrate one's effort or interest

:  engage, deal

:  a food made by boiling fruit and sugar to a thick consistency

:  to become blocked, wedged, or stuck fast

:  to become unworkable when a movable part becomes blocked or stuck

:  to force one's way into a restricted space

:  a crowded mass that impedes or blocks movement

:  an act or instance of becoming blocked or jammed (see ²jam)

:  the quality or state of being blocked, stopped, or jammed