rough rider

名詞

Something, such as a steam locomotive, that does not travel smoothly when in motion / (formerly) A person whose speciality was the breaking in or training of wild horses.

日本語の意味

（蒸気機関車など、走行が滑らかでないものを指す） / （かつて）荒馬の鞍慣らしや調教を専門に行っていた人

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The old steam engine was a notorious rough rider that jostled passengers every time it crossed the tracks.

Google翻訳 / DeepL翻訳

その古い蒸気機関車は悪名高いガタガタ揺れる車両で、線路を渡るたびに乗客を揺り動かした。

詳細

意味（1）

Something, such as a steam locomotive, that does not travel smoothly when in motion

It is common knowledge that the Stanier Class 5 4-6-0s can be very rough riders at speed, owing to "knock" in the trailing left-hand axlebox, and this tendency would be eased with any lengthening of the cut-off.

Google翻訳 / DeepL翻訳