"slave chain" meaning in English

{
  "forms": [
    {
      "form": "slave chains",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "slave chain (plural slave chains)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "56 44",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "58 42",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "61 39",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              96,
              107
            ]
          ],
          "ref": "1913, Edgar Rice Burroughs, The Return of Tarzan, New York: Ballantine Books, published 1963, page 136:",
          "text": "Then Tarzan turned his attention to the fifty women and youths chained neck to neck on the long slave chain.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A long chain to which slaves were fastened, especially when being transported."
      ],
      "id": "en-slave_chain-en-noun-FPVtfwnu",
      "links": [
        [
          "fasten",
          "fasten"
        ],
        [
          "transport",
          "transport"
        ]
      ]
    },
    {
      "glosses": [
        "A series of coupled slave units in a master-slave system."
      ],
      "id": "en-slave_chain-en-noun-oKok3Ckd"
    }
  ],
  "word": "slave chain"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "forms": [
    {
      "form": "slave chains",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "slave chain (plural slave chains)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English terms with quotations"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              96,
              107
            ]
          ],
          "ref": "1913, Edgar Rice Burroughs, The Return of Tarzan, New York: Ballantine Books, published 1963, page 136:",
          "text": "Then Tarzan turned his attention to the fifty women and youths chained neck to neck on the long slave chain.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A long chain to which slaves were fastened, especially when being transported."
      ],
      "links": [
        [
          "fasten",
          "fasten"
        ],
        [
          "transport",
          "transport"
        ]
      ]
    },
    {
      "glosses": [
        "A series of coupled slave units in a master-slave system."
      ]
    }
  ],
  "word": "slave chain"
}