Definition of overlaud:
(adj) :
(especially of travel) By or across land.
(adv) :
Over, across, or by land.
(n) :
(travel) A trip by land between the UK and the Indian subcontinent or Australia, or between the UK and South Africa.
(v) :
(intransitive, Australia) To travel across land.
(v) :
(transitive, Australia) To transport (especially sheep or other farm animals) over land.
(v) :
(intransitive) To go on a recreational expedition to a remote destination, often with the aid of an off-road vehicle.