"T perm" meaning in English

{
  "etymology_text": "The wrong pieces form a T. \"Perm\" means permutation.",
  "forms": [
    {
      "form": "T perms",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "T perm (plural T perms)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rubik's Cube",
          "orig": "en:Rubik's Cube",
          "parents": [
            "Games",
            "Toys",
            "Recreation",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A PLL case (i.e. a case where the cubies of the last layer all have the last-side colour facing the last side) where a pair of opposite edge cubies and a pair of corner cubies that lie on either side of one of the wrong edges both need to be swapped."
      ],
      "id": "en-T_perm-en-noun-3Nmn-VSO",
      "links": [
        [
          "Rubik's Cube",
          "Rubik's Cube"
        ],
        [
          "PLL",
          "PLL"
        ],
        [
          "cubie",
          "cubie"
        ]
      ],
      "raw_glosses": [
        "(Rubik's Cube) A PLL case (i.e. a case where the cubies of the last layer all have the last-side colour facing the last side) where a pair of opposite edge cubies and a pair of corner cubies that lie on either side of one of the wrong edges both need to be swapped."
      ],
      "topics": [
        "Rubik's-Cube",
        "games"
      ]
    }
  ],
  "word": "T perm"
}

{
  "etymology_text": "The wrong pieces form a T. \"Perm\" means permutation.",
  "forms": [
    {
      "form": "T perms",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "T perm (plural T perms)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms derived from the shape of letters",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Rubik's Cube"
      ],
      "glosses": [
        "A PLL case (i.e. a case where the cubies of the last layer all have the last-side colour facing the last side) where a pair of opposite edge cubies and a pair of corner cubies that lie on either side of one of the wrong edges both need to be swapped."
      ],
      "links": [
        [
          "Rubik's Cube",
          "Rubik's Cube"
        ],
        [
          "PLL",
          "PLL"
        ],
        [
          "cubie",
          "cubie"
        ]
      ],
      "raw_glosses": [
        "(Rubik's Cube) A PLL case (i.e. a case where the cubies of the last layer all have the last-side colour facing the last side) where a pair of opposite edge cubies and a pair of corner cubies that lie on either side of one of the wrong edges both need to be swapped."
      ],
      "topics": [
        "Rubik's-Cube",
        "games"
      ]
    }
  ],
  "word": "T perm"
}