noun
special rapid service; special fast train
A train service category in Japan, faster than a regular rapid train but slower than a limited express. Often abbreviated as 特快 (とっかい).
中央線の特別快速は新宿から立川まで途中の停車駅が少ない。
The Chūō Line special rapid service makes few stops between Shinjuku and Tachikawa.
特別快速に乗れば、快速より早く着きます。
If you take the special rapid train, you'll arrive faster than by the regular rapid train.
Compound of 特別 (special) and 快速 (high speed, rapid), referring to a special category of rapid train service.