"-avimus" meaning in Latin

{
  "forms": [
    {
      "form": "-āvimus",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "suffix form",
        "head": "-āvimus"
      },
      "expansion": "-āvimus",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Latin entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Latin entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Latin terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "first conjugation; verbs with the perfect infix -av-",
          "word": "-ō"
        }
      ],
      "glosses": [
        "first-person plural perfect active indicative of -ō (first conjugation; verbs with the perfect infix -av-)"
      ],
      "id": "en--avimus-la-suffix-akeKJtts",
      "links": [
        [
          "-ō",
          "-o#Latin"
        ],
        [
          "-av-",
          "-av-#Latin"
        ]
      ],
      "tags": [
        "active",
        "first-person",
        "form-of",
        "indicative",
        "morpheme",
        "perfect",
        "plural"
      ]
    }
  ],
  "word": "-avimus"
}

{
  "forms": [
    {
      "form": "-āvimus",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "suffix form",
        "head": "-āvimus"
      },
      "expansion": "-āvimus",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        "Latin entries with incorrect language header",
        "Latin entries with language name categories using raw markup",
        "Latin inflectional suffixes",
        "Latin non-lemma forms",
        "Latin suffix forms",
        "Latin terms with non-redundant non-automated sortkeys"
      ],
      "form_of": [
        {
          "extra": "first conjugation; verbs with the perfect infix -av-",
          "word": "-ō"
        }
      ],
      "glosses": [
        "first-person plural perfect active indicative of -ō (first conjugation; verbs with the perfect infix -av-)"
      ],
      "links": [
        [
          "-ō",
          "-o#Latin"
        ],
        [
          "-av-",
          "-av-#Latin"
        ]
      ],
      "tags": [
        "active",
        "first-person",
        "form-of",
        "indicative",
        "morpheme",
        "perfect",
        "plural"
      ]
    }
  ],
  "word": "-avimus"
}