"tứ thiết" meaning in Vietnamese

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "四",
        "2": "four",
        "3": "鐵",
        "4": "strong, firm"
      },
      "expansion": "Sino-Vietnamese word from 四 (“four”) and 鐵 (“strong, firm”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 四 (“four”) and 鐵 (“strong, firm”).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "verb",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "tứ thiết",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "tứ thiết",
      "name": "vi-verb"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Sino-Vietnamese words",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Sino-Vietnamese words with uncreated Han etymology",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Vietnamese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "vi",
          "name": "Woods",
          "orig": "vi:Woods",
          "parents": [
            "Natural materials",
            "Trees",
            "Materials",
            "Nature",
            "Plants",
            "Manufacturing",
            "All topics",
            "Lifeforms",
            "Human activity",
            "Fundamental",
            "Life",
            "Human behaviour",
            "Human"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "four traditional fine types of timber native to Vietnam: đinh, lim, sến, táu"
      ],
      "id": "en-tứ_thiết-vi-verb-qdA7fgTI",
      "links": [
        [
          "traditional",
          "traditional"
        ],
        [
          "fine",
          "fine"
        ],
        [
          "timber",
          "timber"
        ],
        [
          "Vietnam",
          "Vietnam"
        ],
        [
          "đinh",
          "đinh#Vietnamese"
        ],
        [
          "lim",
          "lim#Vietnamese"
        ],
        [
          "sến",
          "sến#Vietnamese"
        ],
        [
          "táu",
          "táu#Vietnamese"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[tɨ˧˦ tʰiət̚˧˦]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[tɨ˨˩˦ tʰiək̚˦˧˥]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[tɨ˦˥ tʰiək̚˦˥]",
      "note": "Saigon"
    }
  ],
  "word": "tứ thiết"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "四",
        "2": "four",
        "3": "鐵",
        "4": "strong, firm"
      },
      "expansion": "Sino-Vietnamese word from 四 (“four”) and 鐵 (“strong, firm”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 四 (“four”) and 鐵 (“strong, firm”).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "verb",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "tứ thiết",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "tứ thiết",
      "name": "vi-verb"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Sino-Vietnamese words",
        "Sino-Vietnamese words with uncreated Han etymology",
        "Vietnamese entries with incorrect language header",
        "Vietnamese lemmas",
        "Vietnamese terms with IPA pronunciation",
        "Vietnamese verbs",
        "vi:Woods"
      ],
      "glosses": [
        "four traditional fine types of timber native to Vietnam: đinh, lim, sến, táu"
      ],
      "links": [
        [
          "traditional",
          "traditional"
        ],
        [
          "fine",
          "fine"
        ],
        [
          "timber",
          "timber"
        ],
        [
          "Vietnam",
          "Vietnam"
        ],
        [
          "đinh",
          "đinh#Vietnamese"
        ],
        [
          "lim",
          "lim#Vietnamese"
        ],
        [
          "sến",
          "sến#Vietnamese"
        ],
        [
          "táu",
          "táu#Vietnamese"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[tɨ˧˦ tʰiət̚˧˦]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[tɨ˨˩˦ tʰiək̚˦˧˥]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[tɨ˦˥ tʰiək̚˦˥]",
      "note": "Saigon"
    }
  ],
  "word": "tứ thiết"
}