The Armenian word skesur
Word skesur
Meaning mother-in-law
See also Homeric Greek: ἑκυρά ‘mother-in-law’

Other words that might be of interest
ayr ‘man’, kin ‘woman, wife’, elbayr ‘brother’, mayr ‘mother’, haw ‘grandfather’, hayr ‘father’, mard ‘man, mortal’, mawru-a ‘stepmother’