"double-ender" meaning in English

{
  "forms": [
    {
      "form": "double-enders",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "double-ender (plural double-enders)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Nautical",
          "orig": "en:Nautical",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "56 5 31 8",
          "kind": "topical",
          "langcode": "en",
          "name": "Watercraft",
          "orig": "en:Watercraft",
          "parents": [
            "Nautical",
            "Vehicles",
            "Transport",
            "Machines",
            "All topics",
            "Technology",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A vessel capable of moving both forwards and backwards, having bow and rudder at each end."
      ],
      "id": "en-double-ender-en-noun-TFUC0JaM",
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "vessel",
          "vessel"
        ],
        [
          "bow",
          "bow"
        ],
        [
          "rudder",
          "rudder"
        ]
      ],
      "raw_glosses": [
        "(nautical) A vessel capable of moving both forwards and backwards, having bow and rudder at each end."
      ],
      "topics": [
        "nautical",
        "transport"
      ]
    },
    {
      "glosses": [
        "A locomotive with a pilot at each end."
      ],
      "id": "en-double-ender-en-noun-7XIQ7iw9",
      "links": [
        [
          "locomotive",
          "locomotive"
        ],
        [
          "pilot",
          "pilot"
        ],
        [
          "Edward H[enry] Knight",
          "w:Edward H. Knight"
        ]
      ]
    },
    {
      "categories": [
        {
          "_dis": "15 2 61 22",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "13 3 50 33",
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "16 4 60 21",
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A cross-cut sawing machine, with two adjustable circular saws, for sawing both ends of timber."
      ],
      "id": "en-double-ender-en-noun-vuwSC7~c"
    },
    {
      "categories": [
        {
          "_dis": "12 7 6 75",
          "kind": "topical",
          "langcode": "en",
          "name": "Sex",
          "orig": "en:Sex",
          "parents": [
            "All topics",
            "Reproduction",
            "Fundamental",
            "Life",
            "Nature"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A dildo designed to penetrate two people simultaneously."
      ],
      "id": "en-double-ender-en-noun-1G9fq5Kh",
      "links": [
        [
          "dildo",
          "dildo"
        ]
      ]
    }
  ],
  "word": "double-ender"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English entries with topic categories using raw markup",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "English terms with non-redundant non-automated sortkeys",
    "en:Sex",
    "en:Watercraft"
  ],
  "forms": [
    {
      "form": "double-enders",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "double-ender (plural double-enders)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "en:Nautical"
      ],
      "glosses": [
        "A vessel capable of moving both forwards and backwards, having bow and rudder at each end."
      ],
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "vessel",
          "vessel"
        ],
        [
          "bow",
          "bow"
        ],
        [
          "rudder",
          "rudder"
        ]
      ],
      "raw_glosses": [
        "(nautical) A vessel capable of moving both forwards and backwards, having bow and rudder at each end."
      ],
      "topics": [
        "nautical",
        "transport"
      ]
    },
    {
      "glosses": [
        "A locomotive with a pilot at each end."
      ],
      "links": [
        [
          "locomotive",
          "locomotive"
        ],
        [
          "pilot",
          "pilot"
        ],
        [
          "Edward H[enry] Knight",
          "w:Edward H. Knight"
        ]
      ]
    },
    {
      "glosses": [
        "A cross-cut sawing machine, with two adjustable circular saws, for sawing both ends of timber."
      ]
    },
    {
      "glosses": [
        "A dildo designed to penetrate two people simultaneously."
      ],
      "links": [
        [
          "dildo",
          "dildo"
        ]
      ]
    }
  ],
  "word": "double-ender"
}