"B+" meaning in English

{
  "forms": [
    {
      "form": "B+'s",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "B+'s"
      },
      "expansion": "B+ (plural B+'s)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "19 37 44",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "95 5",
          "kind": "topical",
          "langcode": "en",
          "name": "Academic grades",
          "orig": "en:Academic grades",
          "parents": [
            "Education",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "An academic grade awarded by some institutions. Slightly better than a B and slightly worse than an A−."
      ],
      "id": "en-B+-en-noun-i9xrq46m",
      "links": [
        [
          "B",
          "B"
        ],
        [
          "A−",
          "A−"
        ]
      ],
      "related": [
        {
          "_dis1": "100 0",
          "word": "B+ tree"
        }
      ]
    },
    {
      "categories": [
        {
          "_dis": "19 37 44",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A position in ballet where the dancer's working leg is pointed behind them in a bent fourth position; an unstretched tendu en arrière"
      ],
      "id": "en-B+-en-noun-yCKSdVc-",
      "links": [
        [
          "ballet",
          "ballet"
        ],
        [
          "working leg",
          "working leg"
        ],
        [
          "fourth position",
          "fourth position"
        ],
        [
          "tendu en arrière",
          "tendu en arrière"
        ]
      ]
    }
  ],
  "word": "B+"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English nouns with irregular plurals",
    "English terms spelled with +",
    "English words without vowels",
    "Pages with 2 entries",
    "Pages with entries",
    "en:Academic grades"
  ],
  "forms": [
    {
      "form": "B+'s",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "B+'s"
      },
      "expansion": "B+ (plural B+'s)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "B+ tree"
    }
  ],
  "senses": [
    {
      "glosses": [
        "An academic grade awarded by some institutions. Slightly better than a B and slightly worse than an A−."
      ],
      "links": [
        [
          "B",
          "B"
        ],
        [
          "A−",
          "A−"
        ]
      ]
    },
    {
      "glosses": [
        "A position in ballet where the dancer's working leg is pointed behind them in a bent fourth position; an unstretched tendu en arrière"
      ],
      "links": [
        [
          "ballet",
          "ballet"
        ],
        [
          "working leg",
          "working leg"
        ],
        [
          "fourth position",
          "fourth position"
        ],
        [
          "tendu en arrière",
          "tendu en arrière"
        ]
      ]
    }
  ],
  "word": "B+"
}