[A. G. Maisey]

I've just had a look at EK, and it appears to refer to the side profile of the gonjo, where the top of the gonjo is curved, not flat.

As I said, I've never heard the term used for keris, but then, there are a lot of things in EK that are strange to me.

No idea at all what a "gonjo nungkak" is, but a "tungkakan" on a keris is the little curve down at the joint of wadidang and gonjo; "tungkak" is "heel"; "nungkak" means to follow somebody very closely, ie "on their heels".

There is a whole lexicon of keris terms that have surfaced in the last 20 or so years that I never heard used in the 1980's & 1990's. Some might have been revived from obscure old printed matter, some might have been invented. If one wishes to appear to be learned it is always a good idea to use words that nobody else knows, thus causing confusion and generating the need to ask the user exactly what he means, thereby elevating his status.

To me, this sort of thing is a part of the name game, and does not really have a whole lot to do with understanding the keris. Probably a nice thing for collectors to play with, but not really of so much use.