出典:Wiktionary
From porter (“person who carries luggage かつ related objects”) + -age (suffix forming nouns indicating an action, process, または result; a charge, fee, または toll; または a relationship または state).[1]
porterage (countable かつ uncountable, 複数形 porterages)
From porter (“person in control of the entrance to a building”) + -age (suffix forming nouns indicating a relationship または state).[2]
porterage (uncountable)