sloper

Noun

informal obsolete

(informal) Something which angles or slopes, as distinguished from one that is verticle or horizontal. / A climbing hold that has a smooth surface and sloping shape, making it difficult to hold.

Japanese Meaning

（非公式）垂直や水平ではなく、斜めに傾いた形状や物体 / （クライミング用品）滑らかで傾斜した形状のため、握りにくいクライミングホールド

What is this buttons?

He rested the ladder against a sloper rather than a vertical wall, so it kept slipping.

Google Translation / DeepL Translation

彼は梯子を垂直の壁ではなく傾斜面に立てかけたため、滑り続けました。

Details

Sense（1）

(informal) Something which angles or slopes, as distinguished from one that is verticle or horizontal.

If one saw only the Rheims benches, one would scarcely prefer the slopers to horizontal retorts with good stoking machinery ; as for instance the Ross stoker at the Cincinnati gas works.

Google Translation / DeepL Translation