"replacement" meaning in English

{
  "categories": [
    {
      "kind": "other",
      "name": "Terms suffixed with -ment",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "replace",
        "2": "ment"
      },
      "expansion": "replace + -ment",
      "name": "ety-suffix"
    }
  ],
  "etymology_text": "replace + -ment",
  "forms": [
    {
      "form": "replacement",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "replacements",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "expansion": "[POS TABLE]",
      "name": "noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [],
      "examples": [
        {
          "text": "I'll be the replacement security guard for the guy who quit."
        },
        {
          "text": "Here is the replacement gadget for the one you lost."
        }
      ],
      "glosses": [
        "A replacement is something that stands in for something else."
      ],
      "id": "simple-replacement-en-noun-oQnKpMI6",
      "raw_tags": [
        "countable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/rɪˈpleɪsmənt/"
    },
    {
      "audio": "en-us-replacement.ogg",
      "raw_tags": [
        "Audio"
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "word": "replacement"
}

{
  "categories": [
    "Terms suffixed with -ment"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "replace",
        "2": "ment"
      },
      "expansion": "replace + -ment",
      "name": "ety-suffix"
    }
  ],
  "etymology_text": "replace + -ment",
  "forms": [
    {
      "form": "replacement",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "replacements",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "expansion": "[POS TABLE]",
      "name": "noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Countable nouns"
      ],
      "examples": [
        {
          "text": "I'll be the replacement security guard for the guy who quit."
        },
        {
          "text": "Here is the replacement gadget for the one you lost."
        }
      ],
      "glosses": [
        "A replacement is something that stands in for something else."
      ],
      "raw_tags": [
        "countable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/rɪˈpleɪsmənt/"
    },
    {
      "audio": "en-us-replacement.ogg",
      "raw_tags": [
        "Audio"
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "word": "replacement"
}