"Pythagorean cup" meaning in English

{
  "etymology_text": "Credited to Pythagoras of Samos.",
  "forms": [
    {
      "form": "Pythagorean cups",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "Pythagoras cup",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Pythagorean cup (plural Pythagorean cups)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A practical joke device in a form of a drinking cup, sometimes used to make statements about greed. When it is filled beyond a certain point, a siphoning effect causes the cup to drain its entire contents through the base."
      ],
      "id": "en-Pythagorean_cup-en-noun-vQFBomOO",
      "links": [
        [
          "practical joke",
          "practical joke"
        ],
        [
          "greed",
          "greed"
        ],
        [
          "siphon",
          "siphon"
        ]
      ],
      "wikipedia": [
        "Pythagoras of Samos"
      ]
    }
  ],
  "word": "Pythagorean cup"
}

{
  "etymology_text": "Credited to Pythagoras of Samos.",
  "forms": [
    {
      "form": "Pythagorean cups",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "Pythagoras cup",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Pythagorean cup (plural Pythagorean cups)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "A practical joke device in a form of a drinking cup, sometimes used to make statements about greed. When it is filled beyond a certain point, a siphoning effect causes the cup to drain its entire contents through the base."
      ],
      "links": [
        [
          "practical joke",
          "practical joke"
        ],
        [
          "greed",
          "greed"
        ],
        [
          "siphon",
          "siphon"
        ]
      ],
      "wikipedia": [
        "Pythagoras of Samos"
      ]
    }
  ],
  "word": "Pythagorean cup"
}