"movable nu" meaning in English

{
  "forms": [
    {
      "form": "movable nus",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "movable nu (plural movable nus)",
      "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",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Ancient Greek translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with French translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Grammar",
          "orig": "en:Grammar",
          "parents": [
            "Linguistics",
            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The letter nu placed on the end of some grammatical forms in Attic or Ionic Greek, to avoid two vowels in a row (hiatus) or to create a long syllable in poetic meter."
      ],
      "id": "en-movable_nu-en-noun-2KHX7CeU",
      "links": [
        [
          "grammar",
          "grammar"
        ],
        [
          "nu",
          "nu"
        ],
        [
          "Attic",
          "Attic"
        ],
        [
          "Ionic",
          "Ionic"
        ],
        [
          "Greek",
          "Greek"
        ],
        [
          "hiatus",
          "hiatus"
        ],
        [
          "syllable",
          "syllable"
        ],
        [
          "poetic",
          "poetic"
        ],
        [
          "meter",
          "meter"
        ]
      ],
      "raw_glosses": [
        "(grammar) The letter nu placed on the end of some grammatical forms in Attic or Ionic Greek, to avoid two vowels in a row (hiatus) or to create a long syllable in poetic meter."
      ],
      "synonyms": [
        {
          "word": "ephelcystic nu"
        },
        {
          "word": "nu movable"
        }
      ],
      "topics": [
        "grammar",
        "human-sciences",
        "linguistics",
        "sciences"
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "nu éphelcystique"
        },
        {
          "code": "grc",
          "lang": "Ancient Greek",
          "roman": "nû ephelkustikón",
          "sense": "Translations",
          "tags": [
            "neuter"
          ],
          "word": "νῦ ἐφελκυστικόν"
        }
      ],
      "wikipedia": [
        "movable nu"
      ]
    }
  ],
  "word": "movable nu"
}

{
  "forms": [
    {
      "form": "movable nus",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "movable nu (plural movable nus)",
      "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",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Ancient Greek translations",
        "Terms with French translations",
        "Translation table header lacks gloss",
        "en:Grammar"
      ],
      "glosses": [
        "The letter nu placed on the end of some grammatical forms in Attic or Ionic Greek, to avoid two vowels in a row (hiatus) or to create a long syllable in poetic meter."
      ],
      "links": [
        [
          "grammar",
          "grammar"
        ],
        [
          "nu",
          "nu"
        ],
        [
          "Attic",
          "Attic"
        ],
        [
          "Ionic",
          "Ionic"
        ],
        [
          "Greek",
          "Greek"
        ],
        [
          "hiatus",
          "hiatus"
        ],
        [
          "syllable",
          "syllable"
        ],
        [
          "poetic",
          "poetic"
        ],
        [
          "meter",
          "meter"
        ]
      ],
      "raw_glosses": [
        "(grammar) The letter nu placed on the end of some grammatical forms in Attic or Ionic Greek, to avoid two vowels in a row (hiatus) or to create a long syllable in poetic meter."
      ],
      "topics": [
        "grammar",
        "human-sciences",
        "linguistics",
        "sciences"
      ],
      "wikipedia": [
        "movable nu"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "ephelcystic nu"
    },
    {
      "word": "nu movable"
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "nu éphelcystique"
    },
    {
      "code": "grc",
      "lang": "Ancient Greek",
      "roman": "nû ephelkustikón",
      "sense": "Translations",
      "tags": [
        "neuter"
      ],
      "word": "νῦ ἐφελκυστικόν"
    }
  ],
  "word": "movable nu"
}