Sister-in-law Definition
sĭstər-ĭn-lô
sisters-in-law
noun
The sister of one's husband or wife.
Webster's New World
The wife of one's sibling.
Webster's New World
The wife of a sibling of one's husband or wife.
Webster's New World
Other Word Forms of Sister-in-law
Noun
Singular:
sister-in-law
Plural:
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