"on the slide" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "on the slide",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "on the slide",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2020 September 1, Tom Lamont, “The butcher's shop that lasted 300 years (give or take)”, in The Guardian",
          "text": "The L-shaped shopping parade, which had once wooed custom away from the small shops down the hill, was on the slide, left stranded by changes in consumer habits.",
          "type": "quotation"
        },
        {
          "ref": "2022, Liam McIlvanney, The Heretic, page 280",
          "text": "Yvonne was on the slide.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "in decline"
      ],
      "id": "en-on_the_slide-en-prep_phrase-OJ2962Rx",
      "links": [
        [
          "decline",
          "decline"
        ]
      ]
    }
  ],
  "word": "on the slide"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "on the slide",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "on the slide",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English prepositional phrases",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2020 September 1, Tom Lamont, “The butcher's shop that lasted 300 years (give or take)”, in The Guardian",
          "text": "The L-shaped shopping parade, which had once wooed custom away from the small shops down the hill, was on the slide, left stranded by changes in consumer habits.",
          "type": "quotation"
        },
        {
          "ref": "2022, Liam McIlvanney, The Heretic, page 280",
          "text": "Yvonne was on the slide.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "in decline"
      ],
      "links": [
        [
          "decline",
          "decline"
        ]
      ]
    }
  ],
  "word": "on the slide"
}