"river mouth" meaning in English

{
  "forms": [
    {
      "form": "river mouths",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "river mouth (plural river mouths)",
      "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": "Geography",
          "orig": "en:Geography",
          "parents": [
            "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": [
        "The area where a river flows into a larger body of water."
      ],
      "id": "en-river_mouth-en-noun-H3-SfFyM",
      "links": [
        [
          "geography",
          "geography"
        ],
        [
          "area",
          "area"
        ],
        [
          "river",
          "river"
        ],
        [
          "flow",
          "flow"
        ],
        [
          "body of water",
          "body of water"
        ]
      ],
      "raw_glosses": [
        "(geography) The area where a river flows into a larger body of water."
      ],
      "topics": [
        "geography",
        "natural-sciences"
      ],
      "translations": [
        {
          "code": "lv",
          "lang": "Latvian",
          "sense": "The place where a river flows into the sea",
          "tags": [
            "feminine"
          ],
          "word": "ieteka"
        },
        {
          "code": "lv",
          "lang": "Latvian",
          "sense": "The place where a river flows into the sea",
          "tags": [
            "feminine"
          ],
          "word": "upes ieteka"
        },
        {
          "code": "mt",
          "lang": "Maltese",
          "sense": "The place where a river flows into the sea",
          "tags": [
            "masculine"
          ],
          "word": "fomm ix-xmara"
        },
        {
          "code": "mi",
          "lang": "Maori",
          "sense": "The place where a river flows into the sea",
          "word": "pūao"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "ústʹje",
          "sense": "The place where a river flows into the sea",
          "tags": [
            "neuter"
          ],
          "word": "у́стье"
        },
        {
          "code": "tft",
          "lang": "Ternate",
          "sense": "The place where a river flows into the sea",
          "word": "bolote"
        }
      ]
    }
  ],
  "word": "river mouth"
}

{
  "forms": [
    {
      "form": "river mouths",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "river mouth (plural river mouths)",
      "name": "en-noun"
    }
  ],
  "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",
        "en:Geography",
        "en:Landforms"
      ],
      "glosses": [
        "The area where a river flows into a larger body of water."
      ],
      "links": [
        [
          "geography",
          "geography"
        ],
        [
          "area",
          "area"
        ],
        [
          "river",
          "river"
        ],
        [
          "flow",
          "flow"
        ],
        [
          "body of water",
          "body of water"
        ]
      ],
      "raw_glosses": [
        "(geography) The area where a river flows into a larger body of water."
      ],
      "topics": [
        "geography",
        "natural-sciences"
      ]
    }
  ],
  "translations": [
    {
      "code": "lv",
      "lang": "Latvian",
      "sense": "The place where a river flows into the sea",
      "tags": [
        "feminine"
      ],
      "word": "ieteka"
    },
    {
      "code": "lv",
      "lang": "Latvian",
      "sense": "The place where a river flows into the sea",
      "tags": [
        "feminine"
      ],
      "word": "upes ieteka"
    },
    {
      "code": "mt",
      "lang": "Maltese",
      "sense": "The place where a river flows into the sea",
      "tags": [
        "masculine"
      ],
      "word": "fomm ix-xmara"
    },
    {
      "code": "mi",
      "lang": "Maori",
      "sense": "The place where a river flows into the sea",
      "word": "pūao"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "ústʹje",
      "sense": "The place where a river flows into the sea",
      "tags": [
        "neuter"
      ],
      "word": "у́стье"
    },
    {
      "code": "tft",
      "lang": "Ternate",
      "sense": "The place where a river flows into the sea",
      "word": "bolote"
    }
  ],
  "word": "river mouth"
}