local train; slow train
Colloquial term for a train that stops at every station, as opposed to a 急行 (express). Often used in contrast with faster services.
See also: 急行
If you take the local train, it takes two hours to reach the destination.
I missed the express, so I waited for the next local train.
鈍行 is a slow local train that stops at every station, the opposite in speed and prestige to 超特急.
Compound of 鈍 (don, 'slow, dull') and 行 (kō, 'going, travel'), literally 'slow travel'. The reading is on'yomi.