The very sharp fin, shaped like a two-edged spear, on the
back of a stingray. (It is located at the juncture of the body
and tail.)
ma-
To be stabbed or stuck by this fin.
It is extremely painful. Some people say that if a man has
been stuck by the tabak fin of a stingray, he should
not sit next to a woman. If he does, the pain will increase.