śvaśrū́ f. (of śvaśura) a mother-in-law (either the wife's or the husband's mother), [RV.] &c. &c.
pl. the mother-in-law and the other wives of the father-in-law, [RV.]
[cf. Lat. socrus; Slav. svekry; Angl.Sax. swëger; Germ. swigar, swiger, Schwieger.]