"6x6" meaning in English

{
  "forms": [
    {
      "form": "6x6s",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "6x6"
      },
      "expansion": "6x6 (plural 6x6s)",
      "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": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English reduplicated coordinated pairs",
          "parents": [
            "Reduplicated coordinated pairs",
            "Coordinated pairs",
            "Reduplications",
            "Terms by etymology"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Automotive",
          "orig": "en:Automotive",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "a six-wheeled vehicle with six-wheel drive (each wheel has powered drive)"
      ],
      "id": "en-6x6-en-noun-dQDzoNez",
      "links": [
        [
          "automotive",
          "automotive"
        ]
      ],
      "raw_glosses": [
        "(automotive) a six-wheeled vehicle with six-wheel drive (each wheel has powered drive)"
      ],
      "related": [
        {
          "word": "4x4"
        },
        {
          "word": "8x8"
        }
      ],
      "topics": [
        "automotive",
        "transport",
        "vehicles"
      ],
      "wikipedia": [
        "6x6"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/sɪks baɪ sɪks/",
      "tags": [
        "UK",
        "US"
      ]
    }
  ],
  "word": "6x6"
}

{
  "forms": [
    {
      "form": "6x6s",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "6x6"
      },
      "expansion": "6x6 (plural 6x6s)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "4x4"
    },
    {
      "word": "8x8"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English lemmas",
        "English nouns",
        "English palindromes",
        "English reduplicated coordinated pairs",
        "English terms spelled with numbers",
        "English terms with IPA pronunciation",
        "English words without vowels",
        "en:Automotive"
      ],
      "glosses": [
        "a six-wheeled vehicle with six-wheel drive (each wheel has powered drive)"
      ],
      "links": [
        [
          "automotive",
          "automotive"
        ]
      ],
      "raw_glosses": [
        "(automotive) a six-wheeled vehicle with six-wheel drive (each wheel has powered drive)"
      ],
      "topics": [
        "automotive",
        "transport",
        "vehicles"
      ],
      "wikipedia": [
        "6x6"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/sɪks baɪ sɪks/",
      "tags": [
        "UK",
        "US"
      ]
    }
  ],
  "word": "6x6"
}