"spend a penny" meaning in English

{
  "etymology_text": "From the act of putting a (pre-decimal) penny in the slot of a pay-toilet cubicle.",
  "forms": [
    {
      "form": "spends a penny",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "spending a penny",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "spent a penny",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "spent a penny",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "spend<,,spent> a penny"
      },
      "expansion": "spend a penny (third-person singular simple present spends a penny, present participle spending a penny, simple past and past participle spent a penny)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English euphemisms",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1982, Alan Bennett, “A Woman of No Importance”, in The Complete Talking Heads, Picador, published 2010, page 14",
          "text": "I put on a lick of paint, slip over and spend a penny in Costing…I should technically use the one in Records but I've told them, that lavatory seat is a death trap.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To use the toilet."
      ],
      "id": "en-spend_a_penny-en-verb-vXpy95HW",
      "links": [
        [
          "toilet",
          "toilet"
        ]
      ],
      "raw_glosses": [
        "(UK, dated, euphemistic) To use the toilet."
      ],
      "tags": [
        "UK",
        "dated",
        "euphemistic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-spend a penny.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/4a/En-au-spend_a_penny.ogg/En-au-spend_a_penny.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/4/4a/En-au-spend_a_penny.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "spend a penny"
}

{
  "etymology_text": "From the act of putting a (pre-decimal) penny in the slot of a pay-toilet cubicle.",
  "forms": [
    {
      "form": "spends a penny",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "spending a penny",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "spent a penny",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "spent a penny",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "spend<,,spent> a penny"
      },
      "expansion": "spend a penny (third-person singular simple present spends a penny, present participle spending a penny, simple past and past participle spent a penny)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "British English",
        "English dated terms",
        "English entries with incorrect language header",
        "English euphemisms",
        "English lemmas",
        "English multiword terms",
        "English terms with audio links",
        "English terms with quotations",
        "English verbs"
      ],
      "examples": [
        {
          "ref": "1982, Alan Bennett, “A Woman of No Importance”, in The Complete Talking Heads, Picador, published 2010, page 14",
          "text": "I put on a lick of paint, slip over and spend a penny in Costing…I should technically use the one in Records but I've told them, that lavatory seat is a death trap.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To use the toilet."
      ],
      "links": [
        [
          "toilet",
          "toilet"
        ]
      ],
      "raw_glosses": [
        "(UK, dated, euphemistic) To use the toilet."
      ],
      "tags": [
        "UK",
        "dated",
        "euphemistic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-spend a penny.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/4a/En-au-spend_a_penny.ogg/En-au-spend_a_penny.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/4/4a/En-au-spend_a_penny.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "spend a penny"
}