1. A journey, mission, or voyage conducted without complications, delays, or disturbances
The mountaineering team had a calm and smooth expedition to the summit.
A equipe de montanhismo teve uma expedição tranquila até o cume.
2. An orderly and uneventful dispatch or sending of goods, people, or materials
The shipment proceeded as a smooth expedition with no complications.
O envio prosseguiu como uma expedição tranquila sem complicações.