"Propontis" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "Προποντίς"
      },
      "expansion": "Ancient Greek Προποντίς (Propontís)",
      "name": "uder"
    }
  ],
  "etymology_text": "From Ancient Greek Προποντίς (Propontís).",
  "head_templates": [
    {
      "args": {},
      "expansion": "Propontis",
      "name": "en-prop"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English undefined derivations",
          "parents": [
            "Undefined derivations",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Sea of Marmara"
      ],
      "id": "en-Propontis-en-name-~F-akTcL",
      "links": [
        [
          "Sea of Marmara",
          "Sea of Marmara"
        ]
      ],
      "raw_glosses": [
        "(historical) Sea of Marmara"
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "word": "Propontis"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "Προποντίς"
      },
      "expansion": "Ancient Greek Προποντίς (Propontís)",
      "name": "uder"
    }
  ],
  "etymology_text": "From Ancient Greek Προποντίς (Propontís).",
  "head_templates": [
    {
      "args": {},
      "expansion": "Propontis",
      "name": "en-prop"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English proper nouns",
        "English terms derived from Ancient Greek",
        "English terms with historical senses",
        "English uncountable nouns",
        "English undefined derivations"
      ],
      "glosses": [
        "Sea of Marmara"
      ],
      "links": [
        [
          "Sea of Marmara",
          "Sea of Marmara"
        ]
      ],
      "raw_glosses": [
        "(historical) Sea of Marmara"
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "word": "Propontis"
}