"a eso de" meaning in Spanish

{
  "head_templates": [
    {
      "args": {
        "1": "es",
        "2": "preposition"
      },
      "expansion": "a eso de",
      "name": "head"
    }
  ],
  "hyphenation": [
    "a"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "prep",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish prepositions",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "around two [o'clock] in the morning",
          "text": "a eso de las dos de la madrugada",
          "type": "example"
        },
        {
          "english": "Around four in the morning, we all told each other good night.",
          "ref": "1998, Roberto Bolaño, Los detectives salvajes, page 262",
          "text": "A eso de las cuatro de la mañana todos nos dijimos buenas noches.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "around, about (roughly at the time)"
      ],
      "id": "en-a_eso_de-es-prep-nW4OQJPu",
      "links": [
        [
          "around",
          "around"
        ],
        [
          "about",
          "about"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/a ˈeso de/"
    },
    {
      "ipa": "[a ˈe.so ð̞e]"
    }
  ],
  "word": "a eso de"
}

{
  "head_templates": [
    {
      "args": {
        "1": "es",
        "2": "preposition"
      },
      "expansion": "a eso de",
      "name": "head"
    }
  ],
  "hyphenation": [
    "a"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "prep",
  "senses": [
    {
      "categories": [
        "Spanish entries with incorrect language header",
        "Spanish lemmas",
        "Spanish multiword terms",
        "Spanish prepositions",
        "Spanish terms with IPA pronunciation",
        "Spanish terms with quotations",
        "Spanish terms with usage examples"
      ],
      "examples": [
        {
          "english": "around two [o'clock] in the morning",
          "text": "a eso de las dos de la madrugada",
          "type": "example"
        },
        {
          "english": "Around four in the morning, we all told each other good night.",
          "ref": "1998, Roberto Bolaño, Los detectives salvajes, page 262",
          "text": "A eso de las cuatro de la mañana todos nos dijimos buenas noches.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "around, about (roughly at the time)"
      ],
      "links": [
        [
          "around",
          "around"
        ],
        [
          "about",
          "about"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/a ˈeso de/"
    },
    {
      "ipa": "[a ˈe.so ð̞e]"
    }
  ],
  "word": "a eso de"
}