"мѧсти" meaning in Vieux slave

{
  "categories": [
    {
      "kind": "other",
      "name": "Mots en vieux slave issus d’un mot en indo-européen commun",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Verbes en vieux slave",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Verbes imperfectifs en vieux slave",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Vieux slave",
      "orig": "vieux slave",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Étymologies en vieux slave incluant une reconstruction",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "lang": "Slovaque",
      "lang_code": "sk",
      "word": "miasť"
    },
    {
      "lang": "Tchèque",
      "lang_code": "cs",
      "word": "mást"
    }
  ],
  "etymology_texts": [
    "De l’indo-européen commun *menth- (« mélanger, tourner ») qui donne μόθος, móthos (« tumulte de la bataille ») en grec homérique, मन्थ, mantha (« barattage ») en sanscrit, mamphur en latin."
  ],
  "lang": "Vieux slave",
  "lang_code": "cu",
  "pos": "verb",
  "pos_title": "Verbe",
  "senses": [
    {
      "glosses": [
        "Troubler."
      ],
      "id": "fr-мѧсти-cu-verb-HbIVJ0iY"
    }
  ],
  "tags": [
    "imperfective"
  ],
  "word": "мѧсти"
}

{
  "categories": [
    "Mots en vieux slave issus d’un mot en indo-européen commun",
    "Verbes en vieux slave",
    "Verbes imperfectifs en vieux slave",
    "vieux slave",
    "Étymologies en vieux slave incluant une reconstruction"
  ],
  "derived": [
    {
      "lang": "Slovaque",
      "lang_code": "sk",
      "word": "miasť"
    },
    {
      "lang": "Tchèque",
      "lang_code": "cs",
      "word": "mást"
    }
  ],
  "etymology_texts": [
    "De l’indo-européen commun *menth- (« mélanger, tourner ») qui donne μόθος, móthos (« tumulte de la bataille ») en grec homérique, मन्थ, mantha (« barattage ») en sanscrit, mamphur en latin."
  ],
  "lang": "Vieux slave",
  "lang_code": "cu",
  "pos": "verb",
  "pos_title": "Verbe",
  "senses": [
    {
      "glosses": [
        "Troubler."
      ]
    }
  ],
  "tags": [
    "imperfective"
  ],
  "word": "мѧсти"
}