The act of carrying something from place to place, or the portability/ease of transport of an item.
このノートパソコンは軽くて持ち運びに便利だ。
This laptop is light and convenient to carry.
大量の荷物の持ち運びは一人では難しい。
Carrying a large amount of luggage is difficult for one person.
持ち運び用のケースを買って、機材を安全に運んだ。
I bought a carrying case and transported the equipment safely.