"piss down" meaning in English

{
  "forms": [
    {
      "form": "pisses down",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "pissing down",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "pissed down",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "pissed down",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "piss down (third-person singular simple present pisses down, present participle pissing down, simple past and past participle pissed down)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English phrasal verbs with particle (down)",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rain",
          "orig": "en:Rain",
          "parents": [
            "Water",
            "Weather",
            "Liquids",
            "Atmosphere",
            "Matter",
            "Nature",
            "Chemistry",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "I'm not going to the shops now. It's pissing down.",
          "type": "example"
        }
      ],
      "glosses": [
        "To rain heavily."
      ],
      "id": "en-piss_down-en-verb-otKtA1an",
      "links": [
        [
          "rain",
          "rain"
        ]
      ],
      "raw_glosses": [
        "(slang, vulgar) To rain heavily."
      ],
      "related": [
        {
          "sense": "rain",
          "word": "like a cow pissing on a flat rock"
        }
      ],
      "synonyms": [
        {
          "word": "piss it down"
        }
      ],
      "tags": [
        "slang",
        "vulgar"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-piss down.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/b/bd/En-au-piss_down.ogg/En-au-piss_down.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/b/bd/En-au-piss_down.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "piss down"
}

{
  "forms": [
    {
      "form": "pisses down",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "pissing down",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "pissed down",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "pissed down",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "piss down (third-person singular simple present pisses down, present participle pissing down, simple past and past participle pissed down)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "related": [
    {
      "sense": "rain",
      "word": "like a cow pissing on a flat rock"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English phrasal verbs",
        "English phrasal verbs with particle (down)",
        "English slang",
        "English terms with audio links",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with usage examples",
        "English verbs",
        "English vulgarities",
        "en:Rain"
      ],
      "examples": [
        {
          "text": "I'm not going to the shops now. It's pissing down.",
          "type": "example"
        }
      ],
      "glosses": [
        "To rain heavily."
      ],
      "links": [
        [
          "rain",
          "rain"
        ]
      ],
      "raw_glosses": [
        "(slang, vulgar) To rain heavily."
      ],
      "synonyms": [
        {
          "word": "piss it down"
        }
      ],
      "tags": [
        "slang",
        "vulgar"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-piss down.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/b/bd/En-au-piss_down.ogg/En-au-piss_down.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/b/bd/En-au-piss_down.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "piss down"
}