"quarter-stave" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "quarterstaves"
      },
      "expansion": "Back-formation from quarterstaves",
      "name": "back-form"
    }
  ],
  "etymology_text": "Back-formation from quarterstaves.",
  "forms": [
    {
      "form": "quarter-staves",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "quarter-stave (plural quarter-staves)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "quarterstaff"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English back-formations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1965, Fawn M. Brody, The Devils Drives, published 1971, page 116",
          "text": "Seizing a quarter-stave, he laid about him joyously.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of quarterstaff"
      ],
      "id": "en-quarter-stave-en-noun-zTlrbnx-",
      "links": [
        [
          "quarterstaff",
          "quarterstaff#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "quarter-stave"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "quarterstaves"
      },
      "expansion": "Back-formation from quarterstaves",
      "name": "back-form"
    }
  ],
  "etymology_text": "Back-formation from quarterstaves.",
  "forms": [
    {
      "form": "quarter-staves",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "quarter-stave (plural quarter-staves)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "quarterstaff"
        }
      ],
      "categories": [
        "English back-formations",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1965, Fawn M. Brody, The Devils Drives, published 1971, page 116",
          "text": "Seizing a quarter-stave, he laid about him joyously.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of quarterstaff"
      ],
      "links": [
        [
          "quarterstaff",
          "quarterstaff#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "quarter-stave"
}