Search Result for "half sister":
Wordnet 3.0

NOUN (1)

1. a sister who has only one parent in common with you;
[syn: half sister, half-sister, stepsister]



WordNet (r) 3.0 (2006):

half sister
    n 1: a sister who has only one parent in common with you [syn:
         half sister, half-sister, stepsister]