"promo code" meaning in English

{
  "forms": [
    {
      "form": "promo codes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "promo code (plural promo codes)",
      "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": "Marketing",
          "orig": "en:Marketing",
          "parents": [
            "Business",
            "Economics",
            "Society",
            "Social sciences",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2005, Marsha Collier, eBay Business All-in-One Desk Reference For Dummies, page 526",
          "text": "If you found a promo code, a dollar amount automatically appears in the Total Funds text box.",
          "type": "quotation"
        },
        {
          "ref": "2011, Bob Sehlinger, Len Testa, The Unofficial Guide Walt Disney World 2011",
          "text": "After purchasing your book today, we found a promo code for a reduced rate.",
          "type": "quotation"
        },
        {
          "ref": "2013, Ben Harvell, Teach Yourself VISUALLY Complete OS X Mavericks, page 495",
          "text": "How do I redeem a gift card or promo code in the Mac App Store?",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A term, number, or alphanumeric combination provided electronically to a vendor in order to redeem a marketing promotion."
      ],
      "id": "en-promo_code-en-noun-P4Y~01SB",
      "links": [
        [
          "marketing",
          "marketing"
        ],
        [
          "promotion",
          "promotion"
        ]
      ],
      "synonyms": [
        {
          "word": "promo-code"
        },
        {
          "word": "promocode"
        }
      ],
      "wikipedia": [
        "promo code"
      ]
    }
  ],
  "word": "promo code"
}

{
  "forms": [
    {
      "form": "promo codes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "promo code (plural promo codes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Quotation templates to be cleaned",
        "en:Marketing"
      ],
      "examples": [
        {
          "ref": "2005, Marsha Collier, eBay Business All-in-One Desk Reference For Dummies, page 526",
          "text": "If you found a promo code, a dollar amount automatically appears in the Total Funds text box.",
          "type": "quotation"
        },
        {
          "ref": "2011, Bob Sehlinger, Len Testa, The Unofficial Guide Walt Disney World 2011",
          "text": "After purchasing your book today, we found a promo code for a reduced rate.",
          "type": "quotation"
        },
        {
          "ref": "2013, Ben Harvell, Teach Yourself VISUALLY Complete OS X Mavericks, page 495",
          "text": "How do I redeem a gift card or promo code in the Mac App Store?",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A term, number, or alphanumeric combination provided electronically to a vendor in order to redeem a marketing promotion."
      ],
      "links": [
        [
          "marketing",
          "marketing"
        ],
        [
          "promotion",
          "promotion"
        ]
      ],
      "wikipedia": [
        "promo code"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "promo-code"
    },
    {
      "word": "promocode"
    }
  ],
  "word": "promo code"
}