"little-used" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "little-used",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1960 February, “Talking of Trains”, in Trains Illustrated, page 67",
          "text": "Mr. Hoyle, who does not believe many multiple-unit diesel services on secondary routes will resist for ever the road transport challenge, would forgo passenger traffic altogether on a little-used route in order to improve the quality of the freight working and reduce its costs by equating the average speed of all trains on the line concerned.",
          "type": "quotation"
        },
        {
          "ref": "1962 December, “British Railways safety in 1961”, in Modern Railways, page 379",
          "text": "The B.T.C. and the National Farmers' Union are now reviewing farm crossings to see if little-used ones could be closed and whether a simple warning could be provided at crossings where conditions are difficult.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Not used much, or as much as another / others; lightly used"
      ],
      "id": "en-little-used-en-adj-WNxCO3kj",
      "synonyms": [
        {
          "word": "little used"
        }
      ]
    }
  ],
  "word": "little-used"
}

{
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "little-used",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1960 February, “Talking of Trains”, in Trains Illustrated, page 67",
          "text": "Mr. Hoyle, who does not believe many multiple-unit diesel services on secondary routes will resist for ever the road transport challenge, would forgo passenger traffic altogether on a little-used route in order to improve the quality of the freight working and reduce its costs by equating the average speed of all trains on the line concerned.",
          "type": "quotation"
        },
        {
          "ref": "1962 December, “British Railways safety in 1961”, in Modern Railways, page 379",
          "text": "The B.T.C. and the National Farmers' Union are now reviewing farm crossings to see if little-used ones could be closed and whether a simple warning could be provided at crossings where conditions are difficult.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Not used much, or as much as another / others; lightly used"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "little used"
    }
  ],
  "word": "little-used"
}