sister-in-law
sis·ter–in–law
noun \ˈsis-t(ə-)rən-ˌlȯ, -tərn-ˌlȯ\ plural sis·ters–in–law\-tər-zən-\
Definition of SISTER-IN-LAW
1
: the sister of one's spouse
2
a : the wife of one's brother b : the wife of one's spouse's brother
See First Known Use of SISTER-IN-LAW
15th century
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Previous Word in the Dictionary: sistering
All Words Near: sister-in-law
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