half-sister
sister related through one parent only
Sibling
One's sibling is one's brother or sister, respectively meaning a male or female with whom one shares at least one
parent. This is usually taken to mean that the two people are
genetically very close, though it is not always necessarily the case, for example one or more siblings may have been
adopted by their parents.
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half sister
Noun
1. a sister who has only one parent in common with you
(synonym) stepsister
(hypernym) sister, sis
Half-sister
(n.)
A sister by one parent only.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
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half sister
n.
سوتيلي بہن