1. adjective /ˈhəʊli,ˈhoʊli/
Holy cow, I can’t believe he actually lost the race!
b) Revered in a religion.
2. noun /ˈhəʊli,ˈhoʊli/
A thing that is extremely holy; used almost exclusively in .
The holy of holies, a cubical space of ten cubits on the side, was separated from the larger antechamber by four columns, which were also covered with gold and stood upon silver sockets; they bore a second curtain of four colors.
Wikipedia foundation.