"jerker" meaning in English

{
  "derived": [
    {
      "_dis1": "0 0",
      "word": "circle jerker"
    },
    {
      "_dis1": "0 0",
      "word": "soda jerker"
    },
    {
      "_dis1": "0 0",
      "word": "tear-jerker"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "jerk",
        "3": "er"
      },
      "expansion": "jerk + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "jerk + -er",
  "forms": [
    {
      "form": "jerkers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "jerker (plural jerkers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "97 3",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "92 8",
          "kind": "other",
          "name": "English terms suffixed with -er",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "98 2",
          "kind": "lifeform",
          "langcode": "en",
          "name": "Leuciscine fish",
          "orig": "en:Leuciscine fish",
          "parents": [
            "Cyprinids",
            "Fish",
            "Otocephalan fish",
            "Vertebrates",
            "Chordates",
            "Animals",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A North American river chub, a hornyhead chub (Nocomis biguttatus)."
      ],
      "id": "en-jerker-en-noun-4yJnlymk",
      "links": [
        [
          "river chub",
          "river chub"
        ],
        [
          "hornyhead chub",
          "hornyhead chub"
        ]
      ]
    },
    {
      "glosses": [
        "Someone or something that jerks."
      ],
      "id": "en-jerker-en-noun-buVYempC",
      "links": [
        [
          "jerk",
          "jerk"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɜː(ɹ)kə(ɹ)"
    }
  ],
  "word": "jerker"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English terms suffixed with -er",
    "Rhymes:English/ɜː(ɹ)kə(ɹ)",
    "Rhymes:English/ɜː(ɹ)kə(ɹ)/2 syllables",
    "en:Leuciscine fish"
  ],
  "derived": [
    {
      "word": "circle jerker"
    },
    {
      "word": "soda jerker"
    },
    {
      "word": "tear-jerker"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "jerk",
        "3": "er"
      },
      "expansion": "jerk + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "jerk + -er",
  "forms": [
    {
      "form": "jerkers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "jerker (plural jerkers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Entries using missing taxonomic name (species)"
      ],
      "glosses": [
        "A North American river chub, a hornyhead chub (Nocomis biguttatus)."
      ],
      "links": [
        [
          "river chub",
          "river chub"
        ],
        [
          "hornyhead chub",
          "hornyhead chub"
        ]
      ]
    },
    {
      "glosses": [
        "Someone or something that jerks."
      ],
      "links": [
        [
          "jerk",
          "jerk"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɜː(ɹ)kə(ɹ)"
    }
  ],
  "word": "jerker"
}