"glacial trough" meaning in English

{
  "forms": [
    {
      "form": "glacial troughs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "glacial trough (plural glacial troughs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Geomorphology",
          "orig": "en:Geomorphology",
          "parents": [
            "Geology",
            "Earth sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "en",
          "name": "Landforms",
          "orig": "en:Landforms",
          "parents": [
            "Earth",
            "Places",
            "Nature",
            "Names",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A valley that resembles the letter U, formed via glaciation."
      ],
      "hyponyms": [
        {
          "word": "through valley"
        }
      ],
      "id": "en-glacial_trough-en-noun-H0QyDfwm",
      "links": [
        [
          "geomorphology",
          "geomorphology"
        ],
        [
          "valley",
          "valley"
        ],
        [
          "U",
          "U"
        ],
        [
          "glaciation",
          "glaciation"
        ]
      ],
      "raw_glosses": [
        "(geomorphology) A valley that resembles the letter U, formed via glaciation."
      ],
      "synonyms": [
        {
          "word": "U-shaped valley"
        },
        {
          "word": "trough valley"
        }
      ],
      "topics": [
        "geography",
        "geology",
        "geomorphology",
        "natural-sciences"
      ],
      "translations": [
        {
          "code": "ca",
          "lang": "Catalan",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "obi"
        },
        {
          "code": "ca",
          "lang": "Catalan",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "comalada"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "Translations",
          "word": "冰川谷"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "Translations",
          "word": "冰河谷"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "Translations",
          "word": "U型山谷"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "Translations",
          "word": "U形谷"
        }
      ],
      "wikipedia": [
        "U-shaped valley"
      ]
    }
  ],
  "word": "glacial trough"
}

{
  "forms": [
    {
      "form": "glacial troughs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "glacial trough (plural glacial troughs)",
      "name": "en-noun"
    }
  ],
  "hyponyms": [
    {
      "word": "through valley"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Translation table header lacks gloss",
        "en:Geomorphology",
        "en:Landforms"
      ],
      "glosses": [
        "A valley that resembles the letter U, formed via glaciation."
      ],
      "links": [
        [
          "geomorphology",
          "geomorphology"
        ],
        [
          "valley",
          "valley"
        ],
        [
          "U",
          "U"
        ],
        [
          "glaciation",
          "glaciation"
        ]
      ],
      "raw_glosses": [
        "(geomorphology) A valley that resembles the letter U, formed via glaciation."
      ],
      "synonyms": [
        {
          "word": "U-shaped valley"
        },
        {
          "word": "trough valley"
        }
      ],
      "topics": [
        "geography",
        "geology",
        "geomorphology",
        "natural-sciences"
      ],
      "wikipedia": [
        "U-shaped valley"
      ]
    }
  ],
  "translations": [
    {
      "code": "ca",
      "lang": "Catalan",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "obi"
    },
    {
      "code": "ca",
      "lang": "Catalan",
      "sense": "Translations",
      "tags": [
        "feminine"
      ],
      "word": "comalada"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "Translations",
      "word": "冰川谷"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "Translations",
      "word": "冰河谷"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "Translations",
      "word": "U型山谷"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "Translations",
      "word": "U形谷"
    }
  ],
  "word": "glacial trough"
}