mother's brother, maternal uncle - தாயின் உடன்பிறந்தோன் father-in-law - மாமனார் father's sister's husband - அத்தை கணவன்
maternal uncle, the brother of one's mother father-in-law the husband of one's paternal aunt
Winslow (1862)
மாமன் (māmaṉ) — noun
[voc. மாமா.] A mother's brother. maternal uncle, தாயுடன்பிறந்தோன்; [contract. of Sa. Mamaka. W. p. 657.]
The paternal aunt's husband, அத்தைகொழுநன்
The husband's or wife's father; also his own brothers
மாமனார் — Father-in-law, as மாமன், 3.
மாமன்முறையோன் — The husband's or wife's father's brother.
மாமி — [pl. மாமிமார்.] The paternal aunt, அத்தை. 2. The maternal uncle's wife, அம்மான்மனைவி. 3. The husband's or wife's mother; also applied to her sisters. மாமிக்கேற்றமருமகளில்லை. There is no daughter-in-law that would suit a mother-in-law.
மாமிமுறையாள் — Wife's or husband's mother's sister.
மாமியார் — Mother-in-law, as மாமி, 3. See குடம்.
Fabricius (1972)
மாமன் — noun
(vulg. மாமா, honor, மாமனார்) a mother's brother, maternal uncle, தாய்மாமன்
the paternal aunt's husband, அத்தை கொழுநன்
a father-in-law
மாமன் முறையோன் — the brother of the father-in-law.