"spread tail" meaning in English

{
  "forms": [
    {
      "form": "spread tails",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "spread tail (plural spread tails)",
      "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"
        }
      ],
      "examples": [
        {
          "ref": "1893, Charles Frederick Marvin, Anemometry, page 16",
          "text": "Moreover, for slight deflections of the vane from the wind direction a spread tail presents a greater extent of surface to the wind than a straight-tail vane of the same dimensions.",
          "type": "quotation"
        },
        {
          "ref": "1901 June, “The Brahma Fowl”, in American Poultry Journal, volume 32, number 6, page 497",
          "text": "Now, as we understand all this the Brahma tail most admired is the full spread tail that almost forms a half circle to build out the saddle and make it possible for the saddle to make the concave sweep to the coverts.",
          "type": "quotation"
        },
        {
          "ref": "1964, G. J. Broekhuysen, “A Description and Discussion of Threat- and Anxiety-Behaviour of Burhinus Capensis (Lichtenstein) During Incubation”, in Feestbundel H. Boschma, page 244",
          "text": "There is evidence which seems to show that a spread tail is more aggressive than a folded one and that cocking the tail up is more aggressive than pointing the tail downwards.",
          "type": "quotation"
        },
        {
          "ref": "2012, Ulla M. Norberg, Vertebrate Flight, page 236",
          "text": "Birds with long forked tails, such as some swifts, swallows, terns, frigate birds, and the fork-tailed falcon (Elanoides furcatus), use the spread tail as a long flap on each side to help deflect air over the main wing surface and keep the flow attached at higher angles of attack than otherwise would be possible.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The tail of a bird (or likeness thereof) when the tailfeathers are held tautly outward in a fan-like arrangement."
      ],
      "id": "en-spread_tail-en-noun-7KToHW32",
      "links": [
        [
          "tail",
          "tail"
        ],
        [
          "tailfeather",
          "tailfeather"
        ],
        [
          "fan",
          "fan"
        ]
      ],
      "translations": [
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "rueda"
        }
      ]
    }
  ],
  "word": "spread tail"
}

{
  "forms": [
    {
      "form": "spread tails",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "spread tail (plural spread tails)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Translation table header lacks gloss"
      ],
      "examples": [
        {
          "ref": "1893, Charles Frederick Marvin, Anemometry, page 16",
          "text": "Moreover, for slight deflections of the vane from the wind direction a spread tail presents a greater extent of surface to the wind than a straight-tail vane of the same dimensions.",
          "type": "quotation"
        },
        {
          "ref": "1901 June, “The Brahma Fowl”, in American Poultry Journal, volume 32, number 6, page 497",
          "text": "Now, as we understand all this the Brahma tail most admired is the full spread tail that almost forms a half circle to build out the saddle and make it possible for the saddle to make the concave sweep to the coverts.",
          "type": "quotation"
        },
        {
          "ref": "1964, G. J. Broekhuysen, “A Description and Discussion of Threat- and Anxiety-Behaviour of Burhinus Capensis (Lichtenstein) During Incubation”, in Feestbundel H. Boschma, page 244",
          "text": "There is evidence which seems to show that a spread tail is more aggressive than a folded one and that cocking the tail up is more aggressive than pointing the tail downwards.",
          "type": "quotation"
        },
        {
          "ref": "2012, Ulla M. Norberg, Vertebrate Flight, page 236",
          "text": "Birds with long forked tails, such as some swifts, swallows, terns, frigate birds, and the fork-tailed falcon (Elanoides furcatus), use the spread tail as a long flap on each side to help deflect air over the main wing surface and keep the flow attached at higher angles of attack than otherwise would be possible.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The tail of a bird (or likeness thereof) when the tailfeathers are held tautly outward in a fan-like arrangement."
      ],
      "links": [
        [
          "tail",
          "tail"
        ],
        [
          "tailfeather",
          "tailfeather"
        ],
        [
          "fan",
          "fan"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "Translations",
      "tags": [
        "feminine"
      ],
      "word": "rueda"
    }
  ],
  "word": "spread tail"
}