noun
alternative station name; supplementary station name
A secondary name given to a railway station, often in parentheses or smaller text, used for nearby landmarks, institutions, or neighborhoods. Common in Japanese train systems.
東京メトロの駅には、よく副駅名が表示されている。
Tokyo Metro stations often display an alternative station name.
この駅の副駅名は「東京タワー前」です。
The supplementary station name for this station is 'Tokyo Tower-mae'.