"double-crosser" meaning in English

{
  "categories": [
    {
      "kind": "other",
      "name": "Λέξεις με επίθημα -er (αγγλικά)",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_text": ": double-crosser < double-cross + -er",
  "forms": [
    {
      "form": "double-crosser"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "προδότης"
      ],
      "id": "el-double-crosser-en-noun-Kzv-xL4j"
    }
  ],
  "synonyms": [
    {
      "word": "betrayer"
    }
  ],
  "word": "double-crosser"
}

{
  "categories": [
    "Λέξεις με επίθημα -er (αγγλικά)"
  ],
  "etymology_text": ": double-crosser < double-cross + -er",
  "forms": [
    {
      "form": "double-crosser"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "προδότης"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "betrayer"
    }
  ],
  "word": "double-crosser"
}