"gladdon" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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      "alt_of": [
        {
          "extra": "sword grass",
          "word": "gladen"
        }
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          "ref": "1962, J.R.R. Tolkien, The Sea-Bell:",
          "text": "Alders were sleeping, and willows weeping\nby a slow river of rippling weeds;\ngladdon-swords guarded the fords,\nand green spears, and arrow-reeds.",
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      "glosses": [
        "Alternative form of gladen (“sword grass”)"
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          "gladen",
          "gladen#English"
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  "word": "gladdon"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "extra": "sword grass",
          "word": "gladen"
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        {
          "ref": "1962, J.R.R. Tolkien, The Sea-Bell:",
          "text": "Alders were sleeping, and willows weeping\nby a slow river of rippling weeds;\ngladdon-swords guarded the fords,\nand green spears, and arrow-reeds.",
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          "gladen#English"
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  "word": "gladdon"
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