Konstantinos Papaconstan

http://lexilogia.gr/forum

I am a non-professional linguist, I search the following matter as an amateur linguist sleuth:
I keep hearing from The Grant Hotel Antenna characters referring to a woman that they are interested in and has their respect as 'γγόνα' or 'γκόνα'.
Linguist Dr. Georgios Babiniotis has retired and never replies now to my questions!
Can Ms.(?) Zazula (Administrator) please give me some hints about its etymology ?
Konstantinos Papaconstantinou
papaconstantinouk10@yahoo.com