"seat stay" meaning in English

{
  "etymology_text": "Possibly borrowed from sailing jargon where \"stay\" refers to a rope, wire, or rod which runs fore-and-aft along the centerline of a sailing ship from mast to deck, or to another mast, and serves to stabilize the mast.",
  "forms": [
    {
      "form": "seat stays",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "seat stay (plural seat stays)",
      "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": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Dutch translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Bicycle parts",
          "orig": "en:Bicycle parts",
          "parents": [
            "Cycling",
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "The bike was not safe to ride as it had a bend in the seat stay",
          "type": "example"
        }
      ],
      "glosses": [
        "One of the two bicycle frame tubes running diagonally downward from the top of the seat tube to the rear dropouts."
      ],
      "id": "en-seat_stay-en-noun-SXDVYYrX",
      "synonyms": [
        {
          "word": "seatstay"
        }
      ],
      "translations": [
        {
          "code": "nl",
          "lang": "Dutch",
          "sense": "bicycle frame tube",
          "tags": [
            "common-gender"
          ],
          "word": "staande achtervork"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "bicycle frame tube",
          "word": "takahaarukan yläputki"
        },
        {
          "code": "fi",
          "english": "both tubes collectively",
          "lang": "Finnish",
          "sense": "bicycle frame tube",
          "word": "ylätakahaarukka"
        }
      ]
    }
  ],
  "word": "seat stay"
}

{
  "etymology_text": "Possibly borrowed from sailing jargon where \"stay\" refers to a rope, wire, or rod which runs fore-and-aft along the centerline of a sailing ship from mast to deck, or to another mast, and serves to stabilize the mast.",
  "forms": [
    {
      "form": "seat stays",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "seat stay (plural seat stays)",
      "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 usage examples",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Dutch translations",
        "Terms with Finnish translations",
        "en:Bicycle parts"
      ],
      "examples": [
        {
          "text": "The bike was not safe to ride as it had a bend in the seat stay",
          "type": "example"
        }
      ],
      "glosses": [
        "One of the two bicycle frame tubes running diagonally downward from the top of the seat tube to the rear dropouts."
      ]
    }
  ],
  "synonyms": [
    {
      "word": "seatstay"
    }
  ],
  "translations": [
    {
      "code": "nl",
      "lang": "Dutch",
      "sense": "bicycle frame tube",
      "tags": [
        "common-gender"
      ],
      "word": "staande achtervork"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "bicycle frame tube",
      "word": "takahaarukan yläputki"
    },
    {
      "code": "fi",
      "english": "both tubes collectively",
      "lang": "Finnish",
      "sense": "bicycle frame tube",
      "word": "ylätakahaarukka"
    }
  ],
  "word": "seat stay"
}