"straight r" meaning in English

{
  "forms": [
    {
      "form": "straight rs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "straight r (plural straight rs)",
      "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 German translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Latin letter names",
          "orig": "en:Latin letter names",
          "parents": [
            "Letter names",
            "Letters, symbols, and punctuation",
            "Names",
            "Orthography",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Writing",
            "Fundamental",
            "Nouns",
            "Human behaviour",
            "Language",
            "Lemmas",
            "Human",
            "Communication"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Typography",
          "orig": "en:Typography",
          "parents": [
            "Printing",
            "Writing",
            "Industries",
            "Human behaviour",
            "Language",
            "Business",
            "Human",
            "Communication",
            "Economics",
            "Society",
            "All topics",
            "Social sciences",
            "Fundamental",
            "Sciences"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1989, Arend Quak, Florus (Floor) Rhee, Palaeogermanica et onomastica., Rodopi, page 3",
          "text": "[…] completely informed about the decisions made and the reasons to make them, e.g. r rotunda does not figure in the transcription as the use of straight r and r rotunda is governed by the preceding character and thus completely predictable."
        },
        {
          "ref": "2000, Anna A. Grotans, Heinrich Beck, Anton Schwob, De consolatione philogiae: studies in honor of Evelyn S. Firchow, volume 2, page 624:",
          "text": "And certain geminated consonants are represented by capitals : ɢ, ɴ, ʀ, ꜱ. Does a form like haʀ mean a long r, or is it a scribal habit on the level of the usage of r rotunda, not straight r, after round letters? The occurrence of forms with -rr […]",
          "type": "quote"
        },
        {
          "ref": "2017, Andrea de Leeuw van Weenen, A Grammar of Möðruvallabók, BRILL, →ISBN, page 11:",
          "text": "The distinction between r rotunda and straight r has not been kept in the transcription, as the usage of r rotunda is predictable from the preceding character: r rotunda is used after round letters.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The usual form of the letter r (which is r), as contrasted with r rotunda (ꝛ)."
      ],
      "id": "en-straight_r-en-noun-GQIsxe3B",
      "links": [
        [
          "typography",
          "typography"
        ],
        [
          "usual",
          "usual"
        ],
        [
          "letter",
          "letter"
        ],
        [
          "r",
          "r"
        ],
        [
          "contrasted",
          "contrasted"
        ],
        [
          "r rotunda",
          "r rotunda"
        ],
        [
          "ꝛ",
          "ꝛ"
        ]
      ],
      "raw_glosses": [
        "(typography) The usual form of the letter r (which is r), as contrasted with r rotunda (ꝛ)."
      ],
      "topics": [
        "media",
        "publishing",
        "typography"
      ],
      "translations": [
        {
          "code": "nl",
          "lang": "Dutch",
          "sense": "regular form of the letter r",
          "word": "r recta"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "regular form of the letter r",
          "tags": [
            "neuter"
          ],
          "word": "gerades r"
        }
      ]
    }
  ],
  "word": "straight r"
}

{
  "forms": [
    {
      "form": "straight rs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "straight r (plural straight rs)",
      "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",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned",
        "Terms with Dutch translations",
        "Terms with German translations",
        "en:Latin letter names",
        "en:Typography"
      ],
      "examples": [
        {
          "ref": "1989, Arend Quak, Florus (Floor) Rhee, Palaeogermanica et onomastica., Rodopi, page 3",
          "text": "[…] completely informed about the decisions made and the reasons to make them, e.g. r rotunda does not figure in the transcription as the use of straight r and r rotunda is governed by the preceding character and thus completely predictable."
        },
        {
          "ref": "2000, Anna A. Grotans, Heinrich Beck, Anton Schwob, De consolatione philogiae: studies in honor of Evelyn S. Firchow, volume 2, page 624:",
          "text": "And certain geminated consonants are represented by capitals : ɢ, ɴ, ʀ, ꜱ. Does a form like haʀ mean a long r, or is it a scribal habit on the level of the usage of r rotunda, not straight r, after round letters? The occurrence of forms with -rr […]",
          "type": "quote"
        },
        {
          "ref": "2017, Andrea de Leeuw van Weenen, A Grammar of Möðruvallabók, BRILL, →ISBN, page 11:",
          "text": "The distinction between r rotunda and straight r has not been kept in the transcription, as the usage of r rotunda is predictable from the preceding character: r rotunda is used after round letters.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The usual form of the letter r (which is r), as contrasted with r rotunda (ꝛ)."
      ],
      "links": [
        [
          "typography",
          "typography"
        ],
        [
          "usual",
          "usual"
        ],
        [
          "letter",
          "letter"
        ],
        [
          "r",
          "r"
        ],
        [
          "contrasted",
          "contrasted"
        ],
        [
          "r rotunda",
          "r rotunda"
        ],
        [
          "ꝛ",
          "ꝛ"
        ]
      ],
      "raw_glosses": [
        "(typography) The usual form of the letter r (which is r), as contrasted with r rotunda (ꝛ)."
      ],
      "topics": [
        "media",
        "publishing",
        "typography"
      ]
    }
  ],
  "translations": [
    {
      "code": "nl",
      "lang": "Dutch",
      "sense": "regular form of the letter r",
      "word": "r recta"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "regular form of the letter r",
      "tags": [
        "neuter"
      ],
      "word": "gerades r"
    }
  ],
  "word": "straight r"
}