This is the 9326th most frequent Japanese word.
直通
Direct connection or direct service.
The word '直通' is used to describe a direct transportation service without transfers.
この電車は東京駅まで直通です。
This train is a direct service to Tokyo Station.
Here, '直通' describes a phone line that connects directly to the intended recipient without intermediaries.
直通電話で上司と話しました。
I spoke to my boss through a direct phone line.
In this context, '直通' is used to describe a transportation route that directly connects two locations.