"lach" meaning in Middle Dutch

{
  "head_templates": [
    {
      "args": {
        "1": "dum",
        "2": "verb form"
      },
      "expansion": "lach",
      "name": "head"
    }
  ],
  "lang": "Middle Dutch",
  "lang_code": "dum",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Middle Dutch entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 7 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "liggen"
        }
      ],
      "glosses": [
        "first/third-person singular present indicative of liggen"
      ],
      "id": "en-lach-dum-verb-CYcz15Ce",
      "links": [
        [
          "liggen",
          "liggen#Middle_Dutch"
        ]
      ],
      "tags": [
        "first-person",
        "form-of",
        "indicative",
        "present",
        "singular",
        "third-person"
      ]
    }
  ],
  "word": "lach"
}

{
  "head_templates": [
    {
      "args": {
        "1": "dum",
        "2": "verb form"
      },
      "expansion": "lach",
      "name": "head"
    }
  ],
  "lang": "Middle Dutch",
  "lang_code": "dum",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Middle Dutch entries with incorrect language header",
        "Middle Dutch non-lemma forms",
        "Middle Dutch verb forms",
        "Pages with 7 entries",
        "Pages with entries"
      ],
      "form_of": [
        {
          "word": "liggen"
        }
      ],
      "glosses": [
        "first/third-person singular present indicative of liggen"
      ],
      "links": [
        [
          "liggen",
          "liggen#Middle_Dutch"
        ]
      ],
      "tags": [
        "first-person",
        "form-of",
        "indicative",
        "present",
        "singular",
        "third-person"
      ]
    }
  ],
  "word": "lach"
}