D defs.my
Entry 2 senses Webster, 1913

Stepchild

/stĕp'-chīldˌ/ · Step·child · IPA /stˈɛptʃˌaɪld/
01 n. A bereaved child; one who has lost father or mother.
  1. 1.
    A bereaved child; one who has lost father or mother.[Obs.]
  2. 2.
    A son or daughter of one's wife or husband by a former marriage.