"inside of" meaning in English

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      "args": {},
      "expansion": "inside of",
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  "lang_code": "en",
  "pos": "prep",
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      "examples": [
        {
          "text": "Return it inside (of) a month.",
          "type": "example"
        },
        {
          "ref": "1954, Jim Brewer, Boys’ Life, volume 44, number 2, Think and Grin, page 78, column 1:",
          "text": "A book is a man’s best friend outside of a dog, and inside of a dog, it’s too dark to read.",
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      ],
      "glosses": [
        "Inside"
      ],
      "id": "en-inside_of-en-prep-Ejo-vFfj",
      "links": [
        [
          "Inside",
          "inside"
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  "word": "inside of"
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  "lang_code": "en",
  "pos": "prep",
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      "examples": [
        {
          "text": "Return it inside (of) a month.",
          "type": "example"
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        {
          "ref": "1954, Jim Brewer, Boys’ Life, volume 44, number 2, Think and Grin, page 78, column 1:",
          "text": "A book is a man’s best friend outside of a dog, and inside of a dog, it’s too dark to read.",
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      ],
      "glosses": [
        "Inside"
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      "links": [
        [
          "Inside",
          "inside"
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  "word": "inside of"
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