"senior moment" meaning in English

{
  "etymology_text": "An allusion to the memory difficulties sometimes experienced by senior citizens.",
  "forms": [
    {
      "form": "senior moments",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "senior moment (plural senior moments)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A brief interval of forgetfulness or inattention."
      ],
      "id": "en-senior_moment-en-noun-UNPrLfbr",
      "links": [
        [
          "humorous",
          "humorous"
        ],
        [
          "brief",
          "brief"
        ],
        [
          "interval",
          "interval"
        ],
        [
          "forgetfulness",
          "forgetfulness"
        ],
        [
          "inattention",
          "inattention"
        ]
      ],
      "raw_glosses": [
        "(humorous) A brief interval of forgetfulness or inattention."
      ],
      "related": [
        {
          "word": "blonde moment"
        },
        {
          "word": "draw a blank"
        },
        {
          "word": "brain fart"
        }
      ],
      "tags": [
        "humorous"
      ]
    }
  ],
  "word": "senior moment"
}

{
  "etymology_text": "An allusion to the memory difficulties sometimes experienced by senior citizens.",
  "forms": [
    {
      "form": "senior moments",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "senior moment (plural senior moments)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "blonde moment"
    },
    {
      "word": "draw a blank"
    },
    {
      "word": "brain fart"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English humorous terms",
        "English lemmas",
        "English multiword terms",
        "English nouns"
      ],
      "glosses": [
        "A brief interval of forgetfulness or inattention."
      ],
      "links": [
        [
          "humorous",
          "humorous"
        ],
        [
          "brief",
          "brief"
        ],
        [
          "interval",
          "interval"
        ],
        [
          "forgetfulness",
          "forgetfulness"
        ],
        [
          "inattention",
          "inattention"
        ]
      ],
      "raw_glosses": [
        "(humorous) A brief interval of forgetfulness or inattention."
      ],
      "tags": [
        "humorous"
      ]
    }
  ],
  "word": "senior moment"
}