"לם" meaning in Arabic

{
  "head_templates": [
    {
      "args": {
        "tr": "lam"
      },
      "expansion": "לם • (transliteration needed)",
      "name": "ar-particle"
    }
  ],
  "lang": "Arabic",
  "lang_code": "ar",
  "pos": "particle",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Arabic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Arabic particles",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Judeo-Arabic",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "And a new king arose over Egypt who had not witnessed Joseph.",
          "ref": "c. 10th century, Saadia Gaon, Tafsir, 1:8:",
          "roman": "waqāma malikun jadīdun ʕalā miṣra man lam yušāhid yūsufa.",
          "text": "וקאם מלך גׄדיד עלי מצר מן לם ישאהד יוסף׃",
          "type": "quote"
        }
      ],
      "glosses": [
        "Judeo-Arabic spelling of لَمْ (lam, “not (past tense)”)"
      ],
      "id": "en-לם-ar-particle-VqZJm6LH",
      "links": [
        [
          "لَمْ",
          "لم#Arabic"
        ],
        [
          "not",
          "not"
        ]
      ]
    }
  ],
  "word": "לם"
}

{
  "head_templates": [
    {
      "args": {
        "tr": "lam"
      },
      "expansion": "לם • (transliteration needed)",
      "name": "ar-particle"
    }
  ],
  "lang": "Arabic",
  "lang_code": "ar",
  "pos": "particle",
  "senses": [
    {
      "categories": [
        "Arabic entries with incorrect language header",
        "Arabic lemmas",
        "Arabic particles",
        "Arabic terms with quotations",
        "Judeo-Arabic",
        "Pages with 2 entries",
        "Pages with entries",
        "Requests for transliteration of Arabic terms"
      ],
      "examples": [
        {
          "english": "And a new king arose over Egypt who had not witnessed Joseph.",
          "ref": "c. 10th century, Saadia Gaon, Tafsir, 1:8:",
          "roman": "waqāma malikun jadīdun ʕalā miṣra man lam yušāhid yūsufa.",
          "text": "וקאם מלך גׄדיד עלי מצר מן לם ישאהד יוסף׃",
          "type": "quote"
        }
      ],
      "glosses": [
        "Judeo-Arabic spelling of لَمْ (lam, “not (past tense)”)"
      ],
      "links": [
        [
          "لَمْ",
          "لم#Arabic"
        ],
        [
          "not",
          "not"
        ]
      ]
    }
  ],
  "word": "לם"
}