"star route" meaning in English

{
  "etymology_text": "The blank contracts for these routes bore a number of stars.",
  "forms": [
    {
      "form": "star routes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "star route (plural star routes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A postal delivery route by means other than railroad or steamboat."
      ],
      "id": "en-star_route-en-noun-U3qSMISn",
      "links": [
        [
          "postal",
          "postal"
        ],
        [
          "delivery",
          "delivery"
        ],
        [
          "railroad",
          "railroad"
        ],
        [
          "steamboat",
          "steamboat"
        ]
      ],
      "raw_glosses": [
        "(US, historical) A postal delivery route by means other than railroad or steamboat."
      ],
      "tags": [
        "US",
        "historical"
      ],
      "wikipedia": [
        "Star routes"
      ]
    }
  ],
  "word": "star route"
}

{
  "etymology_text": "The blank contracts for these routes bore a number of stars.",
  "forms": [
    {
      "form": "star routes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "star route (plural star routes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "American English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with historical senses"
      ],
      "glosses": [
        "A postal delivery route by means other than railroad or steamboat."
      ],
      "links": [
        [
          "postal",
          "postal"
        ],
        [
          "delivery",
          "delivery"
        ],
        [
          "railroad",
          "railroad"
        ],
        [
          "steamboat",
          "steamboat"
        ]
      ],
      "raw_glosses": [
        "(US, historical) A postal delivery route by means other than railroad or steamboat."
      ],
      "tags": [
        "US",
        "historical"
      ],
      "wikipedia": [
        "Star routes"
      ]
    }
  ],
  "word": "star route"
}