"syllaba anceps" meaning in English

{
  "etymology_templates": [
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      "args": {
        "1": "en",
        "2": "la",
        "3": "-"
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      "expansion": "Latin",
      "name": "uder"
    }
  ],
  "etymology_text": "Latin: syllaba (“syllable”) + anceps (“double-headed, uncertain”)",
  "forms": [
    {
      "form": "syllabae ancipites",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "syllabae ancipites"
      },
      "expansion": "syllaba anceps (plural syllabae ancipites)",
      "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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          "source": "w"
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          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
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        {
          "kind": "other",
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          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Prosody",
          "orig": "en:Prosody",
          "parents": [
            "Linguistics",
            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
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          "source": "w"
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      "examples": [
        {
          "ref": "1908, Bernard Pyne Grenfell and Arthur Surridge Hunt [eds.], The Oxyrhynchus Papyri (Egypt Exploration Fund), volume 5, issues 840–844, page 17",
          "text": "Syllabae ancipites at the ends of lines are […]"
        },
        {
          "ref": "ante''' 1971, Arthur E. Gordon, The Letter Names of the Latin Alphabet (1973, University of California Press; volume 9 of University of California Publications: Classical Studies), part VI: “Conclusions”, § 1: ‘The Ancient Evidence’, page 51",
          "text": "The name of L constitutes one syllable, but its position at the end of the (dactylic-hexameter) line makes it a syllaba anceps, either long or short, and any one of three interpretations seems possible: el (with the preceding word, geminat, having a long final syllable, the A retaining its original length, as we find in even later poets), or le (with Strzelecki, the E being long or short), or ll (with Marx), i.e., sonant/syllabic l (as others put it)."
        }
      ],
      "glosses": [
        "A syllable of unfixed or undecided weight."
      ],
      "id": "en-syllaba_anceps-en-noun-mB6q1a~r",
      "links": [
        [
          "prosody",
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        ],
        [
          "syllable",
          "syllable#English"
        ],
        [
          "weight",
          "weight#English"
        ]
      ],
      "raw_glosses": [
        "(prosody) A syllable of unfixed or undecided weight."
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "phonology",
        "prosody",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "enpr": "sĭʹləbə ănʹsĕps",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "ipa": "/ˈsɪləbə ˈænsɛps/",
      "tags": [
        "Received-Pronunciation"
      ]
    }
  ],
  "word": "syllaba anceps"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "-"
      },
      "expansion": "Latin",
      "name": "uder"
    }
  ],
  "etymology_text": "Latin: syllaba (“syllable”) + anceps (“double-headed, uncertain”)",
  "forms": [
    {
      "form": "syllabae ancipites",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "syllabae ancipites"
      },
      "expansion": "syllaba anceps (plural syllabae ancipites)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
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        "Pages with 2 entries",
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      "examples": [
        {
          "ref": "1908, Bernard Pyne Grenfell and Arthur Surridge Hunt [eds.], The Oxyrhynchus Papyri (Egypt Exploration Fund), volume 5, issues 840–844, page 17",
          "text": "Syllabae ancipites at the ends of lines are […]"
        },
        {
          "ref": "ante''' 1971, Arthur E. Gordon, The Letter Names of the Latin Alphabet (1973, University of California Press; volume 9 of University of California Publications: Classical Studies), part VI: “Conclusions”, § 1: ‘The Ancient Evidence’, page 51",
          "text": "The name of L constitutes one syllable, but its position at the end of the (dactylic-hexameter) line makes it a syllaba anceps, either long or short, and any one of three interpretations seems possible: el (with the preceding word, geminat, having a long final syllable, the A retaining its original length, as we find in even later poets), or le (with Strzelecki, the E being long or short), or ll (with Marx), i.e., sonant/syllabic l (as others put it)."
        }
      ],
      "glosses": [
        "A syllable of unfixed or undecided weight."
      ],
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        ],
        [
          "syllable",
          "syllable#English"
        ],
        [
          "weight",
          "weight#English"
        ]
      ],
      "raw_glosses": [
        "(prosody) A syllable of unfixed or undecided weight."
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "phonology",
        "prosody",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "enpr": "sĭʹləbə ănʹsĕps",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "ipa": "/ˈsɪləbə ˈænsɛps/",
      "tags": [
        "Received-Pronunciation"
      ]
    }
  ],
  "word": "syllaba anceps"
}