Search Result for "stepchild": 
Wordnet 3.0

NOUN (1)

1. a child of your spouse by a former marriage;

The Collaborative International Dictionary of English v.0.48:

Stepchild \Step"child`\, n. [AS. ste['o]pcild.] 1. A bereaved child; one who has lost father or mother. [Obs.] [1913 Webster] 2. A son or daughter of one's wife or husband by a former marriage. [1913 Webster]
WordNet (r) 3.0 (2006):

stepchild n 1: a child of your spouse by a former marriage
Moby Thesaurus II by Grady Ward, 1.0:

19 Moby Thesaurus words for "stepchild": child, daughter, descendant, foster child, grandchild, granddaughter, grandson, heiress, offspring, scion, son, son and heir, sonny, stepbrother, stepdaughter, stepfather, stepmother, stepsister, stepson