"ссу" meaning in Ukrainien

{
  "categories": [
    {
      "kind": "other",
      "name": "Formes de verbes en ukrainien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Ukrainien",
      "orig": "ukrainien",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Ukrainien",
  "lang_code": "uk",
  "pos": "verb",
  "pos_title": "Forme de verbe",
  "raw_tags": [
    "⁽ˢˢᵘ⁾"
  ],
  "senses": [
    {
      "form_of": [
        {
          "word": "сса́ти"
        }
      ],
      "glosses": [
        "Première personne du singulier du présent de сса́ти."
      ],
      "id": "fr-ссу-uk-verb-8EZMSTPY"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "ссу"
}

{
  "categories": [
    "Formes de verbes en ukrainien",
    "ukrainien"
  ],
  "lang": "Ukrainien",
  "lang_code": "uk",
  "pos": "verb",
  "pos_title": "Forme de verbe",
  "raw_tags": [
    "⁽ˢˢᵘ⁾"
  ],
  "senses": [
    {
      "form_of": [
        {
          "word": "сса́ти"
        }
      ],
      "glosses": [
        "Première personne du singulier du présent de сса́ти."
      ]
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "ссу"
}