Kambi kunna

What is the meaning of kambi in malayalam. . . ?
Saadaarana kambi ennaal 'iron' allengi 'irumbu' ennaanu. But kunna kambiyayi ennaal enda. . ?
Kunna kambiyayi ennaal boys nte 'penis' or 'kunna' nalla adipoli penkuttikale kanumbo kambiyavum. It means the penis turned very thick. . Kunna sherikkum valutaavum. Like a banana. angane bigger aavunnatineyanu kambiyavuka ennu malayalatil parayunatu.