I explained the meaning of the word 'Hoole' in the previous chapter... now it's time to find out what 'Ga' means! It means 'Great Spirit' which a very few special owls have, including Hoole. Put 'Ga' and 'Hoole' together and you have 'Great Spirit of an Owl' or 'Great Spirit of Hoole' 

So King Hoole is still so special to the owls even though he died a very long time ago!