"B40" meaning in English

{
  "categories": [
    {
      "_dis": "0 0",
      "kind": "other",
      "langcode": "en",
      "name": "Malaysia",
      "orig": "en:Malaysia",
      "parents": [],
      "source": "w+disamb"
    }
  ],
  "coordinate_terms": [
    {
      "_dis1": "0 0",
      "word": "M20"
    },
    {
      "_dis1": "0 0",
      "word": "middle-income Malaysian households"
    },
    {
      "_dis1": "0 0",
      "word": "T20"
    },
    {
      "_dis1": "0 0",
      "word": "top-income Malaysian households"
    }
  ],
  "etymology_text": "Short for bottom 40 percent, a portion of Malaysia's population.",
  "forms": [
    {
      "form": "B40s",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "B40 (countable and uncountable, plural B40s)",
      "name": "en-noun"
    },
    {
      "args": {
        "1": "en",
        "2": "Malaysia"
      },
      "expansion": "(Malaysia)",
      "name": "tlb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "86 14",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "79 21",
          "kind": "other",
          "name": "English words spelled without vowels",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "26 2 7 33 33",
          "kind": "other",
          "name": "Pages with 3 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "27 1 3 35 35",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "56 44",
          "kind": "other",
          "langcode": "en",
          "name": "Malaysian politics",
          "orig": "en:Malaysian politics",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A household with a household income among the bottom 40% of household incomes nationally."
      ],
      "id": "en-B40-en-noun-oAFhGOvb",
      "links": [
        [
          "household",
          "household"
        ],
        [
          "household income",
          "household income"
        ]
      ],
      "tags": [
        "Malaysia",
        "countable",
        "uncountable"
      ]
    },
    {
      "glosses": [
        "A person from such a household."
      ],
      "id": "en-B40-en-noun-Nz4wEFUp",
      "tags": [
        "Malaysia",
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "B40"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English terms spelled with numbers",
    "English uncountable nouns",
    "English words spelled without vowels",
    "Pages with 3 entries",
    "Pages with entries",
    "en:Malaysia",
    "en:Malaysian politics"
  ],
  "coordinate_terms": [
    {
      "word": "M20"
    },
    {
      "word": "middle-income Malaysian households"
    },
    {
      "word": "T20"
    },
    {
      "word": "top-income Malaysian households"
    }
  ],
  "etymology_text": "Short for bottom 40 percent, a portion of Malaysia's population.",
  "forms": [
    {
      "form": "B40s",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "B40 (countable and uncountable, plural B40s)",
      "name": "en-noun"
    },
    {
      "args": {
        "1": "en",
        "2": "Malaysia"
      },
      "expansion": "(Malaysia)",
      "name": "tlb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "A household with a household income among the bottom 40% of household incomes nationally."
      ],
      "links": [
        [
          "household",
          "household"
        ],
        [
          "household income",
          "household income"
        ]
      ],
      "tags": [
        "Malaysia",
        "countable",
        "uncountable"
      ]
    },
    {
      "glosses": [
        "A person from such a household."
      ],
      "tags": [
        "Malaysia",
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "B40"
}