"su" meaning in Aromanian

{
  "head_templates": [
    {
      "args": {
        "1": "rup",
        "2": "preposition"
      },
      "expansion": "su",
      "name": "head"
    }
  ],
  "lang": "Aromanian",
  "lang_code": "rup",
  "pos": "prep",
  "senses": [
    {
      "alt_of": [
        {
          "word": "sum"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Aromanian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Aromanian prepositions",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of sum"
      ],
      "id": "en-su-rup-prep-4RlI62Fd",
      "links": [
        [
          "sum",
          "sum#Aromanian"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "su"
}

{
  "categories": [
    "White Hmong entries with incorrect language header",
    "White Hmong lemmas",
    "White Hmong terms with IPA pronunciation",
    "White Hmong verbs"
  ],
  "head_templates": [
    {
      "args": {
        "1": "rup",
        "2": "preposition"
      },
      "expansion": "su",
      "name": "head"
    }
  ],
  "lang": "Aromanian",
  "lang_code": "rup",
  "pos": "prep",
  "senses": [
    {
      "alt_of": [
        {
          "word": "sum"
        }
      ],
      "categories": [
        "Aromanian entries with incorrect language header",
        "Aromanian lemmas",
        "Aromanian prepositions"
      ],
      "glosses": [
        "Alternative form of sum"
      ],
      "links": [
        [
          "sum",
          "sum#Aromanian"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "su"
}