"think back" meaning in English

{
  "forms": [
    {
      "form": "thinks back",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "thinking back",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "thought back",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "thought back",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "think<,,thought> back"
      },
      "expansion": "think back (third-person singular simple present thinks back, present participle thinking back, simple past and past participle thought back)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English phrasal verbs with particle (back)",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Mandarin terms with redundant transliterations",
          "parents": [
            "Terms with redundant transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "When I think back on those times we shared together, I can't help but feel a little sad."
        },
        {
          "text": "Think back to a time when you were happy."
        }
      ],
      "glosses": [
        "To think about a time or experience; to recall."
      ],
      "id": "en-think_back-en-verb-1VAyAm71",
      "links": [
        [
          "think",
          "think"
        ],
        [
          "time",
          "time"
        ],
        [
          "experience",
          "experience"
        ],
        [
          "recall",
          "recall"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) To think about a time or experience; to recall."
      ],
      "tags": [
        "idiomatic"
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "huíxiǎng",
          "sense": "think about a time or experience",
          "word": "回想"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "think about a time or experience",
          "word": "回憶"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "huíyì",
          "sense": "think about a time or experience",
          "word": "回忆"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "think about a time or experience",
          "word": "muistella"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "vspominatʹ",
          "sense": "think about a time or experience",
          "word": "вспоминать"
        }
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-think back.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/7/76/En-au-think_back.ogg/En-au-think_back.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/7/76/En-au-think_back.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "think back"
}

{
  "forms": [
    {
      "form": "thinks back",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "thinking back",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "thought back",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "thought back",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "think<,,thought> back"
      },
      "expansion": "think back (third-person singular simple present thinks back, present participle thinking back, simple past and past participle thought back)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English phrasal verbs",
        "English phrasal verbs with particle (back)",
        "English terms with audio links",
        "English verbs",
        "Mandarin terms with redundant transliterations"
      ],
      "examples": [
        {
          "text": "When I think back on those times we shared together, I can't help but feel a little sad."
        },
        {
          "text": "Think back to a time when you were happy."
        }
      ],
      "glosses": [
        "To think about a time or experience; to recall."
      ],
      "links": [
        [
          "think",
          "think"
        ],
        [
          "time",
          "time"
        ],
        [
          "experience",
          "experience"
        ],
        [
          "recall",
          "recall"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) To think about a time or experience; to recall."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-think back.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/7/76/En-au-think_back.ogg/En-au-think_back.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/7/76/En-au-think_back.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "huíxiǎng",
      "sense": "think about a time or experience",
      "word": "回想"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "think about a time or experience",
      "word": "回憶"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "huíyì",
      "sense": "think about a time or experience",
      "word": "回忆"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "think about a time or experience",
      "word": "muistella"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "vspominatʹ",
      "sense": "think about a time or experience",
      "word": "вспоминать"
    }
  ],
  "word": "think back"
}