Search Result for "stepparent": 
Wordnet 3.0

NOUN (1)

1. the spouse of your parent by a subsequent marriage; 



The Collaborative International Dictionary of English v.0.48:

Stepparent \Step"par`ent\, n.
   Stepfather or stepmother.
   [1913 Webster]


WordNet (r) 3.0 (2006):

stepparent
    n 1: the spouse of your parent by a subsequent marriage