Ma'anar ƙamus na jimlar "tafi gaci" tana nufin aikin saukowa ko zuwa bakin ruwa daga jirgi ko jirgin ruwa zuwa busasshiyar ƙasa. Yawanci ya ƙunshi tashi daga jirgin ruwa zuwa tashar jiragen ruwa, tudun ruwa, bakin teku, ko wani ƙaƙƙarfan ƙasa. Ana amfani da "Tafi gaci" a yanayin ruwa ko na ruwa kuma yana iya isar da ra'ayin isa ga inda aka nufa ko kawo karshen tafiya ta hanyar barin jirgin da kafa ƙafa.