"B-sider" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "B-side",
        "3": "er",
        "id2": "entertainment"
      },
      "expansion": "B-side + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From B-side + -er.",
  "forms": [
    {
      "form": "B-siders",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "B-sider (plural B-siders)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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          "source": "w"
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          "kind": "other",
          "name": "English terms suffixed with -er (entertainment)",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
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          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2000, Kurt Wolff, Orla Duane, Country Music: The Rough Guide, page 314:",
          "text": "[…] a full-throttled B-sider about a trucker fighting bad weather and windy roads to get to his favorite truck stop and waitress.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A song released as a B-side."
      ],
      "id": "en-B-sider-en-noun-Q3RZ7x5W",
      "links": [
        [
          "song",
          "song"
        ],
        [
          "B-side",
          "B-side"
        ]
      ]
    }
  ],
  "word": "B-sider"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "B-side",
        "3": "er",
        "id2": "entertainment"
      },
      "expansion": "B-side + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From B-side + -er.",
  "forms": [
    {
      "form": "B-siders",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "B-sider (plural B-siders)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms suffixed with -er (entertainment)",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2000, Kurt Wolff, Orla Duane, Country Music: The Rough Guide, page 314:",
          "text": "[…] a full-throttled B-sider about a trucker fighting bad weather and windy roads to get to his favorite truck stop and waitress.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A song released as a B-side."
      ],
      "links": [
        [
          "song",
          "song"
        ],
        [
          "B-side",
          "B-side"
        ]
      ]
    }
  ],
  "word": "B-sider"
}