sister-in-law
noun
-tərn-ˌlȯ\
\
Definition of sister-in-law
1 : the sister of one's spouse
2a : the wife of one's sibling
b : the wife of one's spouse's sibling
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More Definitions for sister-in-law
sister-in-law
noun
English Language Learners Definition of sister-in-law
: the sister of your husband or wife
: the wife of your brother
See the full definition for sister-in-law in the English Language Learners Dictionary
sister-in-law
nounKids Definition of sister-in-law
1 : the sister of someone's husband or wife
2 : the wife of someone's brother
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