0 a vehicle whose engine supplies power to all four wheels instead of the usual two, so that it can travel easily over difficult ground
They are to be found on lorries as well as on cars and four-by-four vehicles.
They must be given four-by-four vehicles as soon as possible.
I followed the hunt on foot and in a four-by-four vehicle.
We call it the "four-by-four proposal".
Divided into four-by-four foot sections, the plaster paintings were framed and auctioned.
The four-by-four-bay auditorium wing also sits on a raised basement.
The east side includes a four-by-four light sliding window on the main level and a board-and-batten door for hay in the gable.
Each 100 gram square-shaped bar is divided into 16 smaller squares, creating a four-by-four pattern.