Crossword Genius

Horse that can tell the time (6)

Ross

I believe the answer is:

hunter

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'horse' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for hunter that I've seen before include "one chasing the game?" , "woodsman" , "Orion -- pocket watch with a hinged protective lid" , "Pocket watch; horse" , "''Home is the sailor, home from the sea /And the ...home from the hill'' (R.L Stevenson)" .)

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