The best definition of the word “hallow" is to treat as holy or sacred.
Explanation:
The original definition to the word "hallow" is to bless, consecrate something, this gives a religious definition that can be connected to any kind of rites, then it is mention in "Within a farewell to arms" by Ernest Hemingway within this lines "Abstract words such as glory, honor, courage, or hallow were obscene beside the concrete names of villages, the numbers of roads, the names of rivers, the numbers of regiments and the dates." to demonstrate that there were no holy places.
I believe that Napoleon did it because we wanted to kick out snowball for complete power. Napoleon wanted to get snowball out and he used squealer to lie to the other animals. Just to have them go against snowball.