bonus kid

bonus kid

An alternative to the title "step-kid," which is a child of a step-parent who assumed the parental role through marriage to one of the child's original (usually biological) parents. Most commonly, the step-parent is the second spouse of one of the child's biological parents. My bonus kids come to visit their father and me every other weekend.
See also: bonus, kid
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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"It was the needs of what I call my bonus kids that really brought those issues into my life.