Definition of round trips:
(n) :
(often figurative, travel) A trip from one destination to another and then returning to the starting location.
(n) :
(finance) 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.
(n) :
In an oil-drilling operation, the raising, disassembly and replacement of the drilling equipment.
(n) :
(finance) The investment of a borrowed overdraft in order to make a profit in the same market.
(n) :
(computing) The export and eventual reimport of a file, data, etc. without loss of fidelity.