"δ-boxes" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "form_of": [
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          "word": "δ-box"
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      "glosses": [
        "plural of δ-box"
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  "lang_code": "en",
  "pos": "noun",
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      "form_of": [
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          "word": "δ-box"
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      "glosses": [
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