the labor of taking a load of something off of or out of a vehicle or ship or container etc.
"The crew spent all morning unloading crates from the docked cargo ship before heading home for lunch."
The act by which something is unloaded.
"The unloading of the freighter took longer than expected due to rough seas at the port."
present participle of unload
"The truck was finally unloading its crates while we waited in line to help carry them inside."