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Webster 1913 Edition
Father-in-law
Fa′ther-in-lawˊ
,Noun.
pl.
Fathers-in-law
. The father of one’s husband or wife; – correlative to son-in-law and daughter-in-law.
☞ A man who marries a woman having children already, is sometimes, though erroneously, called their father-in-law.
Webster 1828 Edition
Father-in-law
F'ATHER-IN-LAW
,Noun.