"sounding rod" meaning in English

{
  "forms": [
    {
      "form": "sounding rods",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sounding rod (plural sounding rods)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "A rod or piece of iron let down in a groove by a pump, used to ascertain the depth of water in a ship's hold."
      ],
      "id": "en-sounding_rod-en-noun-br2zK-az",
      "links": [
        [
          "rod",
          "rod"
        ],
        [
          "piece",
          "piece"
        ],
        [
          "iron",
          "iron"
        ],
        [
          "let down",
          "let down"
        ],
        [
          "groove",
          "groove"
        ],
        [
          "pump",
          "pump"
        ],
        [
          "use",
          "use"
        ],
        [
          "ascertain",
          "ascertain"
        ],
        [
          "depth",
          "depth"
        ],
        [
          "water",
          "water"
        ],
        [
          "ship",
          "ship"
        ],
        [
          "hold",
          "hold"
        ]
      ]
    },
    {
      "glosses": [
        "A probe used in urethral sounding."
      ],
      "id": "en-sounding_rod-en-noun-PG4c6-qF",
      "links": [
        [
          "probe",
          "probe"
        ]
      ]
    },
    {
      "categories": [
        {
          "_dis": "8 30 62",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "12 29 59",
          "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": "11 32 58",
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "7 15 78",
          "kind": "topical",
          "langcode": "en",
          "name": "Sex",
          "orig": "en:Sex",
          "parents": [
            "All topics",
            "Reproduction",
            "Fundamental",
            "Life",
            "Nature"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A sex toy consisting of a metal or plastic rod, generally with a ball at the end, which is inserted into the urethra."
      ],
      "id": "en-sounding_rod-en-noun-E1ehgvRd",
      "links": [
        [
          "sex toy",
          "sex toy"
        ],
        [
          "metal",
          "metal"
        ],
        [
          "plastic",
          "plastic"
        ],
        [
          "rod",
          "rod"
        ],
        [
          "ball",
          "ball"
        ],
        [
          "end",
          "end"
        ],
        [
          "insert",
          "insert"
        ],
        [
          "urethra",
          "urethra"
        ]
      ]
    }
  ],
  "word": "sounding rod"
}

{
  "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"
  ],
  "forms": [
    {
      "form": "sounding rods",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sounding rod (plural sounding rods)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "A rod or piece of iron let down in a groove by a pump, used to ascertain the depth of water in a ship's hold."
      ],
      "links": [
        [
          "rod",
          "rod"
        ],
        [
          "piece",
          "piece"
        ],
        [
          "iron",
          "iron"
        ],
        [
          "let down",
          "let down"
        ],
        [
          "groove",
          "groove"
        ],
        [
          "pump",
          "pump"
        ],
        [
          "use",
          "use"
        ],
        [
          "ascertain",
          "ascertain"
        ],
        [
          "depth",
          "depth"
        ],
        [
          "water",
          "water"
        ],
        [
          "ship",
          "ship"
        ],
        [
          "hold",
          "hold"
        ]
      ]
    },
    {
      "glosses": [
        "A probe used in urethral sounding."
      ],
      "links": [
        [
          "probe",
          "probe"
        ]
      ]
    },
    {
      "glosses": [
        "A sex toy consisting of a metal or plastic rod, generally with a ball at the end, which is inserted into the urethra."
      ],
      "links": [
        [
          "sex toy",
          "sex toy"
        ],
        [
          "metal",
          "metal"
        ],
        [
          "plastic",
          "plastic"
        ],
        [
          "rod",
          "rod"
        ],
        [
          "ball",
          "ball"
        ],
        [
          "end",
          "end"
        ],
        [
          "insert",
          "insert"
        ],
        [
          "urethra",
          "urethra"
        ]
      ]
    }
  ],
  "word": "sounding rod"
}