"bonus mother" meaning in English

{
  "forms": [
    {
      "form": "bonus mothers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bonus mother (plural bonus mothers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English euphemisms",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2007, Adena Halpern, Target Underwear and a Vera Wang Gown: Notes from a Single Girl's Closet, Penguin, →ISBN:",
          "text": "To my brood: cousin Michele, sister-in-law Samantha, brother Michael, bonus mother Elaine, and to my brother David who puts the hysterical in Halpern.",
          "type": "quote"
        },
        {
          "ref": "2010, Ivy Ken, Digesting Race, Class, and Gender: Sugar as a Metaphor, Springer, →ISBN:",
          "text": "I am also enormously grateful for all the ways my bonus mother, Jeri, has enhanced my life and the lives of my family and for the joy she so readily shares with us.",
          "type": "quote"
        },
        {
          "ref": "2012, Jesper Juul, Family Time, WestBow Press, →ISBN:",
          "text": "I am sitting on a balcony with the well-spoken and highly experienced family therapist, Jesper Juul. I am a producer, journalist, lecturer, mother, bonus mother and partner. My partner and I live with three boys: my own son Max who is 13 years and my partner's two sons Carl Frederik who is 14 and Johan who is 11.",
          "type": "quote"
        }
      ],
      "form_of": [
        {
          "word": "stepmother"
        }
      ],
      "glosses": [
        "Euphemistic form of stepmother."
      ],
      "id": "en-bonus_mother-en-noun-4kcfOve4",
      "links": [
        [
          "stepmother",
          "stepmother#English"
        ]
      ],
      "raw_glosses": [
        "(US) Euphemistic form of stepmother."
      ],
      "synonyms": [
        {
          "word": "bonus mom"
        },
        {
          "word": "For more synonyms"
        },
        {
          "word": "synonyms of stepmother"
        }
      ],
      "tags": [
        "US",
        "euphemistic",
        "form-of"
      ]
    }
  ],
  "word": "bonus mother"
}

{
  "forms": [
    {
      "form": "bonus mothers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bonus mother (plural bonus mothers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "American English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English euphemisms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2007, Adena Halpern, Target Underwear and a Vera Wang Gown: Notes from a Single Girl's Closet, Penguin, →ISBN:",
          "text": "To my brood: cousin Michele, sister-in-law Samantha, brother Michael, bonus mother Elaine, and to my brother David who puts the hysterical in Halpern.",
          "type": "quote"
        },
        {
          "ref": "2010, Ivy Ken, Digesting Race, Class, and Gender: Sugar as a Metaphor, Springer, →ISBN:",
          "text": "I am also enormously grateful for all the ways my bonus mother, Jeri, has enhanced my life and the lives of my family and for the joy she so readily shares with us.",
          "type": "quote"
        },
        {
          "ref": "2012, Jesper Juul, Family Time, WestBow Press, →ISBN:",
          "text": "I am sitting on a balcony with the well-spoken and highly experienced family therapist, Jesper Juul. I am a producer, journalist, lecturer, mother, bonus mother and partner. My partner and I live with three boys: my own son Max who is 13 years and my partner's two sons Carl Frederik who is 14 and Johan who is 11.",
          "type": "quote"
        }
      ],
      "form_of": [
        {
          "word": "stepmother"
        }
      ],
      "glosses": [
        "Euphemistic form of stepmother."
      ],
      "links": [
        [
          "stepmother",
          "stepmother#English"
        ]
      ],
      "raw_glosses": [
        "(US) Euphemistic form of stepmother."
      ],
      "synonyms": [
        {
          "word": "bonus mom"
        }
      ],
      "tags": [
        "US",
        "euphemistic",
        "form-of"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "For more synonyms"
    },
    {
      "word": "synonyms of stepmother"
    }
  ],
  "word": "bonus mother"
}