What is the meaning of Round_trip?

A trip from one destination to another and then returning to the starting location.

In an oil-drilling operation, the raising, disassembly and replacement of the drilling equipment.

A form of barter that involves the sale of an unused asset and the purchase of the same asset back again, or a similar one, typically used in accounting fraud.

The investment of a borrowed overdraft in order to make a profit in the same market.

The export and eventual reimport of a file, data, etc. without loss of fidelity.

Source: wiktionary.org