"price signal" meaning in English

{
  "forms": [
    {
      "form": "price signals",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "price signal (plural price signals)",
      "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": "Economics",
          "orig": "en:Economics",
          "parents": [
            "Social sciences",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A sign, attached to a commodity and concerning its price, that is intended to increase demand for it"
      ],
      "id": "en-price_signal-en-noun-dOcNCTPv",
      "links": [
        [
          "economics",
          "economics"
        ],
        [
          "sign",
          "sign"
        ],
        [
          "commodity",
          "commodity"
        ],
        [
          "price",
          "price"
        ],
        [
          "demand",
          "demand"
        ]
      ],
      "raw_glosses": [
        "(economics) A sign, attached to a commodity and concerning its price, that is intended to increase demand for it"
      ],
      "related": [
        {
          "word": "BOGOF"
        }
      ],
      "topics": [
        "economics",
        "science",
        "sciences"
      ],
      "wikipedia": [
        "price signal"
      ]
    }
  ],
  "word": "price signal"
}

{
  "forms": [
    {
      "form": "price signals",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "price signal (plural price signals)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "BOGOF"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Economics"
      ],
      "glosses": [
        "A sign, attached to a commodity and concerning its price, that is intended to increase demand for it"
      ],
      "links": [
        [
          "economics",
          "economics"
        ],
        [
          "sign",
          "sign"
        ],
        [
          "commodity",
          "commodity"
        ],
        [
          "price",
          "price"
        ],
        [
          "demand",
          "demand"
        ]
      ],
      "raw_glosses": [
        "(economics) A sign, attached to a commodity and concerning its price, that is intended to increase demand for it"
      ],
      "topics": [
        "economics",
        "science",
        "sciences"
      ],
      "wikipedia": [
        "price signal"
      ]
    }
  ],
  "word": "price signal"
}