"frisaient" meaning in Français

{
  "anagrams": [
    {
      "word": "enfritais"
    },
    {
      "word": "farinites"
    },
    {
      "word": "finterais"
    },
    {
      "word": "resnifait"
    },
    {
      "word": "sniferait"
    }
  ],
  "categories": [
    {
      "kind": "other",
      "name": "Formes de verbes en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "ils/elles frisaient"
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "verb",
  "pos_title": "Forme de verbe",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en français",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "André Theuriet, Bigarreau, Alphonse Lemerre, 1886, page 213",
          "text": "Des hirondelles, véloces comme des flèches, frisaient du bout de leur aile noire cette surface endormie."
        }
      ],
      "form_of": [
        {
          "word": "friser"
        }
      ],
      "glosses": [
        "Troisième personne du pluriel de l’imparfait de l’indicatif de friser."
      ],
      "id": "fr-frisaient-fr-verb-jR3ncrCl"
    }
  ],
  "sounds": [
    {
      "ipa": "\\fʁi.zɛ\\"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "frisaient"
}

{
  "anagrams": [
    {
      "word": "enfritais"
    },
    {
      "word": "farinites"
    },
    {
      "word": "finterais"
    },
    {
      "word": "resnifait"
    },
    {
      "word": "sniferait"
    }
  ],
  "categories": [
    "Formes de verbes en français",
    "français"
  ],
  "forms": [
    {
      "form": "ils/elles frisaient"
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "verb",
  "pos_title": "Forme de verbe",
  "senses": [
    {
      "categories": [
        "Exemples en français"
      ],
      "examples": [
        {
          "ref": "André Theuriet, Bigarreau, Alphonse Lemerre, 1886, page 213",
          "text": "Des hirondelles, véloces comme des flèches, frisaient du bout de leur aile noire cette surface endormie."
        }
      ],
      "form_of": [
        {
          "word": "friser"
        }
      ],
      "glosses": [
        "Troisième personne du pluriel de l’imparfait de l’indicatif de friser."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\fʁi.zɛ\\"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "frisaient"
}