The word(s) "depth" appears 3 time(s) in 3 verse(s) in Quran in Muhammad Pickthal translation.

(1) One among them said: Kill not Joseph but, if ye must be doing, fling him into the depth of the pit; some caravan will find him.

(سورة يوسف, Yusuf, Chapter #12, Verse #10)
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(2) Then, when they led him off, and were of one mind that they should place him in the depth of the pit, We inspired in him: Thou wilt tell them of this deed of theirs when they know (thee) not.

(سورة يوسف, Yusuf, Chapter #12, Verse #15)
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(3) Then looketh he and seeth him in the depth of hell.

(سورة الصافات, As-Saaffaat, Chapter #37, Verse #55)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)