"applier" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "apply",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "apply + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From apply + -er.",
  "forms": [
    {
      "form": "appliers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "applier (plural appliers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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          "source": "w"
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        {
          "_dis": "77 5 18",
          "kind": "other",
          "name": "Old French entries with incorrect language header",
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            "Entry maintenance"
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          "source": "w+disamb"
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        {
          "_dis": "74 10 16",
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          "parents": [],
          "source": "w+disamb"
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          "_dis": "22 36 42",
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          "name": "Old French verbs with weak-a preterite",
          "parents": [],
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        },
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          "_dis": "93 2 4",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A person or device that applies something."
      ],
      "id": "en-applier-en-noun-v1Ath6E3",
      "links": [
        [
          "applies",
          "applies"
        ]
      ]
    }
  ],
  "word": "applier"
}

{
  "categories": [
    "Old French entries with incorrect language header",
    "Old French first group verbs",
    "Old French lemmas",
    "Old French terms derived from Latin",
    "Old French terms inherited from Latin",
    "Old French verbs",
    "Old French verbs ending in -er",
    "Old French verbs with weak-a preterite",
    "Pages with 2 entries",
    "Pages with entries"
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  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "apply",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "apply + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From apply + -er.",
  "forms": [
    {
      "form": "appliers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "applier (plural appliers)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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      "glosses": [
        "A person or device that applies something."
      ],
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        [
          "applies",
          "applies"
        ]
      ]
    }
  ],
  "word": "applier"
}