Abbreviated from 'jun-kyūkō'; a semi-express train that stops at fewer stations than a local but more than an express (designation varies by railway).
この電車は準急なので、快速より停車駅が多い。
This train is a semi-express, so it stops at more stations than a rapid service.
通勤には準急を利用している。
I use the semi-express for my commute.
駅の掲示に「準急は一部の駅に停車します」と書かれている。
The station notice says the semi-express stops at only some stations.