"cook back" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "cook",
        "3": "back",
        "nocat": "1"
      },
      "expansion": "cook + back",
      "name": "af"
    }
  ],
  "etymology_text": "From cook + back.",
  "forms": [
    {
      "form": "cooks back",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "cooking back",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "cooked back",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "cooked back",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "cook back (third-person singular simple present cooks back, present participle cooking back, simple past and past participle cooked 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 formed with \"back\"",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "To recook a drug (especially crack cocaine) in an aqueous solution (water) in order to remove excess adulterants, thereby purifying it."
      ],
      "id": "en-cook_back-en-verb-cJl1L8mB",
      "links": [
        [
          "recook",
          "recook"
        ],
        [
          "crack cocaine",
          "crack cocaine"
        ],
        [
          "adulterant",
          "adulterant"
        ],
        [
          "purify",
          "purify"
        ]
      ],
      "raw_glosses": [
        "(transitive, drugs) To recook a drug (especially crack cocaine) in an aqueous solution (water) in order to remove excess adulterants, thereby purifying it."
      ],
      "tags": [
        "transitive"
      ],
      "topics": [
        "drugs",
        "medicine",
        "pharmacology",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-æk"
    }
  ],
  "word": "cook back"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "cook",
        "3": "back",
        "nocat": "1"
      },
      "expansion": "cook + back",
      "name": "af"
    }
  ],
  "etymology_text": "From cook + back.",
  "forms": [
    {
      "form": "cooks back",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "cooking back",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "cooked back",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "cooked back",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "cook back (third-person singular simple present cooks back, present participle cooking back, simple past and past participle cooked back)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English phrasal verbs",
        "English phrasal verbs formed with \"back\"",
        "English transitive verbs",
        "English verbs",
        "Pages with 1 entry",
        "Pages with entries",
        "Rhymes:English/æk",
        "Rhymes:English/æk/2 syllables"
      ],
      "glosses": [
        "To recook a drug (especially crack cocaine) in an aqueous solution (water) in order to remove excess adulterants, thereby purifying it."
      ],
      "links": [
        [
          "recook",
          "recook"
        ],
        [
          "crack cocaine",
          "crack cocaine"
        ],
        [
          "adulterant",
          "adulterant"
        ],
        [
          "purify",
          "purify"
        ]
      ],
      "raw_glosses": [
        "(transitive, drugs) To recook a drug (especially crack cocaine) in an aqueous solution (water) in order to remove excess adulterants, thereby purifying it."
      ],
      "tags": [
        "transitive"
      ],
      "topics": [
        "drugs",
        "medicine",
        "pharmacology",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-æk"
    }
  ],
  "word": "cook back"
}