noun
Refers to the final scheduled train service on a given day, typically in the context of needing to catch it before service ends.
最終電車に乗り遅れないように急ごう。
Let's hurry so we don't miss the last train.
終電 is a common abbreviation of 最終電車, used more frequently in casual conversation.
Compound of 最終 (last, final) and 電車 (electric train). The term is straightforward and modern.