Majestic stallion? (4)
I believe the answer is:
sire
'majestic stallion?' is the definition.
The definition and answer can be both animals as well as being singular nouns.
Maybe they are linked in a way I don't understand?
This is the entire clue.
Can you help me to learn more?
(Other definitions for sire that I've seen before include "Male parent of, say, horse" , "Male parent of an animal" , "Old form of address to king - rise to it" , "Bear" , "Make children" .)