"מצר ים" meaning in Hebrew

{
  "forms": [
    {
      "form": "מֵצַר יָם",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "meitsár yam",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "g": "m",
        "tr": "meitsár yam",
        "wv": "מֵצַר יָם"
      },
      "expansion": "מֵצַר יָם • (meitsár yam) m",
      "name": "he-noun"
    }
  ],
  "lang": "Hebrew",
  "lang_code": "he",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Hebrew entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "he",
          "name": "Geography",
          "orig": "he:Geography",
          "parents": [
            "Earth sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "strait"
      ],
      "id": "en-מצר_ים-he-noun-HJfbZl8U",
      "links": [
        [
          "geography",
          "geography"
        ],
        [
          "strait",
          "strait"
        ]
      ],
      "raw_glosses": [
        "(geography) strait"
      ],
      "topics": [
        "geography",
        "natural-sciences"
      ]
    }
  ],
  "word": "מצר ים"
}

{
  "forms": [
    {
      "form": "מֵצַר יָם",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "meitsár yam",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "g": "m",
        "tr": "meitsár yam",
        "wv": "מֵצַר יָם"
      },
      "expansion": "מֵצַר יָם • (meitsár yam) m",
      "name": "he-noun"
    }
  ],
  "lang": "Hebrew",
  "lang_code": "he",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Hebrew entries with incorrect language header",
        "Hebrew lemmas",
        "Hebrew masculine nouns",
        "Hebrew multiword terms",
        "Hebrew noun entries missing plural construct forms",
        "Hebrew noun entries missing plural forms",
        "Hebrew noun entries missing singular construct forms",
        "Hebrew nouns",
        "Pages with 1 entry",
        "he:Geography"
      ],
      "glosses": [
        "strait"
      ],
      "links": [
        [
          "geography",
          "geography"
        ],
        [
          "strait",
          "strait"
        ]
      ],
      "raw_glosses": [
        "(geography) strait"
      ],
      "topics": [
        "geography",
        "natural-sciences"
      ]
    }
  ],
  "word": "מצר ים"
}