Crossword Genius

Majestic stallion? (4)

Ross

I believe the answer is:

sire

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'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.

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(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" .)

I've seen this clue in the Evening Standard.
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