"call stack" meaning in English

{
  "etymology_text": ": call stack < → δείτε τις λέξεις call και stack",
  "forms": [
    {
      "form": "call stack"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Πληροφορική (αγγλικά)",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "το στοίβα κλήσεων"
      ],
      "id": "el-call_stack-en-noun-LTdhhRzo",
      "raw_tags": [
        "πληροφορική"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "control stack"
    },
    {
      "word": "execution stack"
    },
    {
      "word": "machine stack"
    },
    {
      "word": "program stack"
    },
    {
      "word": "run-time stack"
    }
  ],
  "word": "call stack"
}

{
  "etymology_text": ": call stack < → δείτε τις λέξεις call και stack",
  "forms": [
    {
      "form": "call stack"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Πληροφορική (αγγλικά)"
      ],
      "glosses": [
        "το στοίβα κλήσεων"
      ],
      "raw_tags": [
        "πληροφορική"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "control stack"
    },
    {
      "word": "execution stack"
    },
    {
      "word": "machine stack"
    },
    {
      "word": "program stack"
    },
    {
      "word": "run-time stack"
    }
  ],
  "word": "call stack"
}