- A royal jurisdiction or domain; a region which is under the
dominion of a king; a kingdom. - Hence, in general, province; region; country; domain;
department; division; as, the realm of fancy.
Meaning of 'realm' (Princeton's WordNet)
1 . realm
[ n]
Meaning (1): - a domain in which something is dominant
Example in sentence:
a land of make-believe;
the rise of the realm of cotton in the south;
the untroubled kingdom of reason
Meaning (2): - a knowledge domain that you are interested in or are communicating about