Definition 1 of 1
Literally means wisdom. To "give gyaan" is to share your wisdom with someone else.
Oftentime, this is used in a slightly sarcastic manner, when the "gyaan" in question isn't of a highly credible or useful nature.
Fascinating! Sarvamangala is full of gyaan about ghosts and how to cure hemorrhoids.
Added 2011-07-25 by mainmacha