"Flettner rotor" meaning in English

{
  "etymology_text": "Named after German aviation engineer and inventor Anton Flettner.",
  "forms": [
    {
      "form": "Flettner rotors",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Flettner rotor (plural Flettner rotors)",
      "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"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A smooth cylinder with disc end-plates which is spun along its long axis and, as air passes at right angles across it, the Magnus effect causes an aerodynamic force to be generated in the direction perpendicular to both the long axis and the direction of air flow."
      ],
      "id": "en-Flettner_rotor-en-noun-ftMkeClb",
      "links": [
        [
          "smooth",
          "smooth"
        ],
        [
          "cylinder",
          "cylinder"
        ],
        [
          "Magnus effect",
          "Magnus effect"
        ],
        [
          "aerodynamic",
          "aerodynamic"
        ],
        [
          "force",
          "force"
        ]
      ],
      "wikipedia": [
        "Flettner rotor"
      ]
    }
  ],
  "word": "Flettner rotor"
}

{
  "etymology_text": "Named after German aviation engineer and inventor Anton Flettner.",
  "forms": [
    {
      "form": "Flettner rotors",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Flettner rotor (plural Flettner rotors)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "A smooth cylinder with disc end-plates which is spun along its long axis and, as air passes at right angles across it, the Magnus effect causes an aerodynamic force to be generated in the direction perpendicular to both the long axis and the direction of air flow."
      ],
      "links": [
        [
          "smooth",
          "smooth"
        ],
        [
          "cylinder",
          "cylinder"
        ],
        [
          "Magnus effect",
          "Magnus effect"
        ],
        [
          "aerodynamic",
          "aerodynamic"
        ],
        [
          "force",
          "force"
        ]
      ],
      "wikipedia": [
        "Flettner rotor"
      ]
    }
  ],
  "word": "Flettner rotor"
}