I am not from Colombia, but I know that:
Parcero - a male friend who is so close to you
Parcera - a female friend who is so close to you
Parce - short way of saying "parcero/parcera"
These words are originally from Colombia. They were born in the city of Medellin in the late 1980's
I hope this helps.
Please, let me know if you have any further questions.
Have a nice day.