"piece of cake" meaning in English

{
  "etymology_text": ": piece of cake < → δείτε τις λέξεις piece, of και cake. κυριολεκτικά: «ένα κομμάτι από κέικ»",
  "forms": [
    {
      "form": "piece of cake"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "examples": [
        {
          "text": "Fixing the bug will be a piece of cake but getting the patch accepted is something else.",
          "translation": "Το να διορθώσω το bug είναι πανεύκολο, αλλά το να ... · αυτό είναι κάτι άλλο πιο δύσκολο."
        }
      ],
      "glosses": [
        "κάτι πανεύκολο, πάρα πολύ εύκολο, ευκολάκι, παιχνιδάκι (στη μεταφορική σημασία)"
      ],
      "id": "el-piece_of_cake-en-phrase-1Sh2fU7q"
    }
  ],
  "synonyms": [
    {
      "word": "easy as pie"
    },
    {
      "word": "a breeze"
    },
    {
      "word": "child's play"
    },
    {
      "word": "like shooting fish in a barrel"
    },
    {
      "word": "like taking candy from a baby"
    },
    {
      "word": "Thesaurus:easy thing (Θησαυρός: κάτι εύκολο)"
    }
  ],
  "word": "piece of cake"
}

{
  "etymology_text": ": piece of cake < → δείτε τις λέξεις piece, of και cake. κυριολεκτικά: «ένα κομμάτι από κέικ»",
  "forms": [
    {
      "form": "piece of cake"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "examples": [
        {
          "text": "Fixing the bug will be a piece of cake but getting the patch accepted is something else.",
          "translation": "Το να διορθώσω το bug είναι πανεύκολο, αλλά το να ... · αυτό είναι κάτι άλλο πιο δύσκολο."
        }
      ],
      "glosses": [
        "κάτι πανεύκολο, πάρα πολύ εύκολο, ευκολάκι, παιχνιδάκι (στη μεταφορική σημασία)"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "easy as pie"
    },
    {
      "word": "a breeze"
    },
    {
      "word": "child's play"
    },
    {
      "word": "like shooting fish in a barrel"
    },
    {
      "word": "like taking candy from a baby"
    },
    {
      "word": "Thesaurus:easy thing (Θησαυρός: κάτι εύκολο)"
    }
  ],
  "word": "piece of cake"
}