"slam back" meaning in English

{
  "forms": [
    {
      "form": "slams back",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "slamming back",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "slammed back",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "slammed back",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "slam back (third-person singular simple present slams back, present participle slamming back, simple past and past participle slammed back)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "drink quickly",
          "word": "throw back"
        }
      ],
      "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"
        }
      ],
      "examples": [
        {
          "ref": "2014 December 23, Tammara Webber, Between the Lines: The Complete Series, Tammara Webber, →ISBN:",
          "text": "No matter how many times we've woken up hungover, or how many times we've mumbled I will never do that again to ourselves and each other, John and I tend to slam back drinks until we can't see straight the next time we go out.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of throw back (“drink quickly”)"
      ],
      "id": "en-slam_back-en-verb-ADDAdPfm",
      "links": [
        [
          "throw back",
          "throw back#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "slam back"
}

{
  "forms": [
    {
      "form": "slams back",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "slamming back",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "slammed back",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "slammed back",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "slam back (third-person singular simple present slams back, present participle slamming back, simple past and past participle slammed back)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "drink quickly",
          "word": "throw back"
        }
      ],
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English phrasal verbs",
        "English phrasal verbs formed with \"back\"",
        "English terms with quotations",
        "English verbs",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2014 December 23, Tammara Webber, Between the Lines: The Complete Series, Tammara Webber, →ISBN:",
          "text": "No matter how many times we've woken up hungover, or how many times we've mumbled I will never do that again to ourselves and each other, John and I tend to slam back drinks until we can't see straight the next time we go out.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of throw back (“drink quickly”)"
      ],
      "links": [
        [
          "throw back",
          "throw back#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "slam back"
}