"by return of post" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "by return of post",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "by return of post",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1909, Hardinge Stanley Giffard, The Laws of England: Being a Complete Statement of the Whole Laws of England Whole, page 353",
          "text": "In mercantile transactions an offer must as a rule be accepted by return of post, or at any rate by a letter posted on the day on which the offer was received.",
          "type": "quotation"
        },
        {
          "ref": "1973, Journal of the Gypsy Lore Society, page 115",
          "text": "B. Gilliat-Smith often said of Dr. Turrill that only two people ever replied to him by return of post, the two being Dr. Turrill, and his Bank Manager.",
          "type": "quotation"
        },
        {
          "ref": "1987, Sir Frederick James Osborn, Arnold Whittick, F.J.O. - Practical Idealist: A Biography of Sir Frederic Osborn, page 76",
          "text": "Osborn replied almost by return of post that he agreed with my suggestions if we could get together a competent group to do the work.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Replying in the next available mail delivery."
      ],
      "id": "en-by_return_of_post-en-prep_phrase-PU~D-N3y",
      "links": [
        [
          "Replying",
          "reply"
        ],
        [
          "mail",
          "mail"
        ],
        [
          "delivery",
          "delivery"
        ]
      ],
      "raw_glosses": [
        "(UK) Replying in the next available mail delivery."
      ],
      "synonyms": [
        {
          "tags": [
            "ellipsis"
          ],
          "word": "by return"
        }
      ],
      "tags": [
        "UK"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "Translations",
          "word": "ensi postilla"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "word": "par retour de courrier"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "Translations",
          "word": "pocztą zwrotną"
        }
      ]
    }
  ],
  "word": "by return of post"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "by return of post",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "by return of post",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        "British English",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English prepositional phrases",
        "English terms with quotations",
        "Translation table header lacks gloss"
      ],
      "examples": [
        {
          "ref": "1909, Hardinge Stanley Giffard, The Laws of England: Being a Complete Statement of the Whole Laws of England Whole, page 353",
          "text": "In mercantile transactions an offer must as a rule be accepted by return of post, or at any rate by a letter posted on the day on which the offer was received.",
          "type": "quotation"
        },
        {
          "ref": "1973, Journal of the Gypsy Lore Society, page 115",
          "text": "B. Gilliat-Smith often said of Dr. Turrill that only two people ever replied to him by return of post, the two being Dr. Turrill, and his Bank Manager.",
          "type": "quotation"
        },
        {
          "ref": "1987, Sir Frederick James Osborn, Arnold Whittick, F.J.O. - Practical Idealist: A Biography of Sir Frederic Osborn, page 76",
          "text": "Osborn replied almost by return of post that he agreed with my suggestions if we could get together a competent group to do the work.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Replying in the next available mail delivery."
      ],
      "links": [
        [
          "Replying",
          "reply"
        ],
        [
          "mail",
          "mail"
        ],
        [
          "delivery",
          "delivery"
        ]
      ],
      "raw_glosses": [
        "(UK) Replying in the next available mail delivery."
      ],
      "tags": [
        "UK"
      ]
    }
  ],
  "synonyms": [
    {
      "tags": [
        "ellipsis"
      ],
      "word": "by return"
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "Translations",
      "word": "ensi postilla"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "Translations",
      "word": "par retour de courrier"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "Translations",
      "word": "pocztą zwrotną"
    }
  ],
  "word": "by return of post"
}