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down-train; train heading toward the ending point of its route
down-slope; downward going
downbound (esp. away from Tokyo)
downstream; downhill
「降り」 has other readings with different meanings.
東京行きの降り列車に乗り換えた。
I transferred to the down-train bound for Tokyo.
降りの電車は朝の時間帯は空いている。
Down-trains are less crowded during the morning rush.
降りのホームは反対側にありますよ。
The platform for the down-train is on the other side.