"มุมฉาก" meaning in Thai

{
  "forms": [
    {
      "form": "mum-chàak",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "มุมฉาก • (mum-chàak)",
      "name": "th-noun"
    }
  ],
  "lang": "Thai",
  "lang_code": "th",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Thai entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Thai terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "right angle"
      ],
      "id": "en-มุมฉาก-th-noun-U9w-IVzu",
      "links": [
        [
          "right angle",
          "right angle"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/mum˧.t͡ɕʰaːk̚˨˩/",
      "tags": [
        "standard"
      ]
    }
  ],
  "word": "มุมฉาก"
}

{
  "forms": [
    {
      "form": "mum-chàak",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "มุมฉาก • (mum-chàak)",
      "name": "th-noun"
    }
  ],
  "lang": "Thai",
  "lang_code": "th",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Rhymes:Thai/aːk̚",
        "Thai 2-syllable words",
        "Thai entries with incorrect language header",
        "Thai lemmas",
        "Thai nouns",
        "Thai terms with IPA pronunciation",
        "Thai terms with redundant script codes"
      ],
      "glosses": [
        "right angle"
      ],
      "links": [
        [
          "right angle",
          "right angle"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/mum˧.t͡ɕʰaːk̚˨˩/",
      "tags": [
        "standard"
      ]
    }
  ],
  "word": "มุมฉาก"
}