"裏技" meaning in Japanese

{
  "forms": [
    {
      "form": "裏技",
      "ruby": [
        [
          "裏",
          "うら"
        ],
        [
          "技",
          "わざ"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "urawaza",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "裏ワザ",
      "tags": [
        "alternative",
        "kanji"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "うらわざ"
      },
      "expansion": "裏(うら)技(わざ) • (urawaza)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "76 24",
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "74 26",
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "73 27",
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "73 27",
          "kind": "other",
          "name": "Japanese terms read with kun'yomi",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "70 30",
          "kind": "other",
          "name": "Japanese terms with 2 kanji",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "59 41",
          "kind": "other",
          "name": "Japanese terms with Heiban pitch accent (Tōkyō)",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "82 18",
          "kind": "other",
          "name": "Japanese terms with non-redundant non-automated sortkeys",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "73 27",
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "73 27",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "88 12",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "An underhanded trick."
      ],
      "id": "en-裏技-ja-noun-HEgHvRRB"
    },
    {
      "glosses": [
        "A lifehack."
      ],
      "id": "en-裏技-ja-noun-Mz0Yn13L",
      "links": [
        [
          "lifehack",
          "lifehack"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "other": "うらわざ"
    },
    {
      "ipa": "[ɯ̟ɾa̠β̞a̠za̠]"
    }
  ],
  "word": "裏技"
}

{
  "categories": [
    "Japanese entries with incorrect language header",
    "Japanese lemmas",
    "Japanese links with redundant alt parameters",
    "Japanese links with redundant wikilinks",
    "Japanese nouns",
    "Japanese terms read with kun'yomi",
    "Japanese terms spelled with fifth grade kanji",
    "Japanese terms spelled with sixth grade kanji",
    "Japanese terms spelled with 技 read as わざ",
    "Japanese terms spelled with 裏 read as うら",
    "Japanese terms with 2 kanji",
    "Japanese terms with Heiban pitch accent (Tōkyō)",
    "Japanese terms with IPA pronunciation",
    "Japanese terms with IPA pronunciation with pitch accent",
    "Japanese terms with non-redundant non-automated sortkeys",
    "Japanese terms with redundant sortkeys",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "forms": [
    {
      "form": "裏技",
      "ruby": [
        [
          "裏",
          "うら"
        ],
        [
          "技",
          "わざ"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "urawaza",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "裏ワザ",
      "tags": [
        "alternative",
        "kanji"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "うらわざ"
      },
      "expansion": "裏(うら)技(わざ) • (urawaza)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "An underhanded trick."
      ]
    },
    {
      "glosses": [
        "A lifehack."
      ],
      "links": [
        [
          "lifehack",
          "lifehack"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "other": "うらわざ"
    },
    {
      "ipa": "[ɯ̟ɾa̠β̞a̠za̠]"
    }
  ],
  "word": "裏技"
}