open wagon

plural open wagons

1. rail transportAn uncovered vehicle used for goods that do not need protection from the weather, although tarpaulins can be used to cover the load.

   For the trip over the grass-covered sleepers and between the cow-parsley and briars, an open wagon was added to the usual combination of locomotive and coach, for the benefit of those who wanted to take photographs.

   1954 April, A. R. G. Hawkins, “The Easingwold Railway”, in Railway Magazine, page 271