sounding rod
plural of fourth-rate
A rod or piece of iron used to ascertain the depth of water in a ship's hold. It is let down in a groove by a pump. / A probe used in urethral sounding
A surname.
(Canada) A place where a north–south grid road jogs to correct for the northward convergence of meridians.
積み荷を積む前に、航海士は船倉の隠れた水を調べるために、ポンプの溝に測深棒を下ろした。
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