"contour chase" meaning in English

{
  "forms": [
    {
      "form": "contour chases",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "contour chasing",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "contour chased",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "contour chased",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "contour chase (third-person singular simple present contour chases, present participle contour chasing, simple past and past participle contour chased)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Aviation",
          "orig": "en:Aviation",
          "parents": [
            "Aeronautics",
            "Transport",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1937, Michael Terry, Sand and Sun",
          "text": "Latterly the visibility, due to the dense haze, had been poor indeed—they had to practically contour chase portions of the way in order to keep the \"road\" in sight. All hands, however, were glad to be on the job after the long flight from Melbourne […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To fly an aircraft at low altitude, following the shape of the ground below."
      ],
      "id": "en-contour_chase-en-verb-HSm-l4dS",
      "links": [
        [
          "aviation",
          "aviation"
        ],
        [
          "aircraft",
          "aircraft"
        ],
        [
          "altitude",
          "altitude"
        ]
      ],
      "raw_glosses": [
        "(aviation) To fly an aircraft at low altitude, following the shape of the ground below."
      ],
      "topics": [
        "aeronautics",
        "aerospace",
        "aviation",
        "business",
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "contour chase"
}

{
  "forms": [
    {
      "form": "contour chases",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "contour chasing",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "contour chased",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "contour chased",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "contour chase (third-person singular simple present contour chases, present participle contour chasing, simple past and past participle contour chased)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English terms with quotations",
        "English verbs",
        "Quotation templates to be cleaned",
        "en:Aviation"
      ],
      "examples": [
        {
          "ref": "1937, Michael Terry, Sand and Sun",
          "text": "Latterly the visibility, due to the dense haze, had been poor indeed—they had to practically contour chase portions of the way in order to keep the \"road\" in sight. All hands, however, were glad to be on the job after the long flight from Melbourne […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To fly an aircraft at low altitude, following the shape of the ground below."
      ],
      "links": [
        [
          "aviation",
          "aviation"
        ],
        [
          "aircraft",
          "aircraft"
        ],
        [
          "altitude",
          "altitude"
        ]
      ],
      "raw_glosses": [
        "(aviation) To fly an aircraft at low altitude, following the shape of the ground below."
      ],
      "topics": [
        "aeronautics",
        "aerospace",
        "aviation",
        "business",
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "contour chase"
}