Trading, bartering.
"The ancient market relied on trucking goods directly from farmers to merchants without using money."
present participle of truck
"The heavy rain made the journey by trucking down the muddy road much slower than usual."
In plain English: To truck means to move something by pushing, pulling, or carrying it with your hands instead of using tools.
"The heavy rain made trucking up to our house very difficult today."
Trucking comes from the word truck, which originally meant to exchange goods by barter before evolving to mean a vehicle used for hauling cargo. The suffix -ing was added later to describe the action of using such vehicles or transporting freight in that manner.