"jō" meaning in English

{
  "forms": [
    {
      "form": "jōs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "jō (plural jōs)",
      "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"
        }
      ],
      "derived": [
        {
          "word": "jōjutsu"
        },
        {
          "word": "jōdō"
        },
        {
          "word": "aiki-jō"
        }
      ],
      "glosses": [
        "An approximately 1.28 m (4.18 foot) long wooden staff, used in some Japanese martial arts."
      ],
      "id": "en-jō-en-noun-XqIUeKqT",
      "related": [
        {
          "word": "bō"
        }
      ],
      "wikipedia": [
        "jō"
      ]
    }
  ],
  "word": "jō"
}

{
  "derived": [
    {
      "word": "jōjutsu"
    },
    {
      "word": "jōdō"
    },
    {
      "word": "aiki-jō"
    }
  ],
  "forms": [
    {
      "form": "jōs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "jō (plural jōs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "bō"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms spelled with Ō",
        "English terms spelled with ◌̄"
      ],
      "glosses": [
        "An approximately 1.28 m (4.18 foot) long wooden staff, used in some Japanese martial arts."
      ],
      "wikipedia": [
        "jō"
      ]
    }
  ],
  "word": "jō"
}