The trolley of a [7]tram or [8]trolleybus is something else, as
   Among horse-drawn vehicles, a trolley was a goods vehicle with a
   A large trolley is likely to have had a headboard with the driver's
   seat on it, as on a lorry but a smaller trolley may have had a box at
   single [11]pony or [12]horse but a large trolley would have a pair.
   float is more a trolley than a [19]float, as is the brewer's 'dray'