1.
steam locomotive; steam engine (train)
A railway locomotive powered by a steam engine. While no longer in regular commercial service in Japan, several are preserved and operated as tourist attractions.
Usage: Often abbreviated to SL (エスエル) in Japanese. Several railway companies in Japan operate preserved steam locomotives as tourist services, including 大井川鉄道, 秩父鉄道, and JR北海道.
The abbreviation SL comes from "Steam Locomotive" and is widely used in Japanese: SL列車 (SL train), SLに乗る (to ride an SL).