Pronunciation: (gä'gä"), [key]
1. excessively and foolishly enthusiastic: The public went gaga over the new fashions.
2. ardently fond; infatuated: He's gaga over the new girl in class.
3. demented; crazy; dotty. Also,ga'-ga".
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.