Crossword Genius

Badger - or horse (3)

Ross

I believe the answer is:

nag

This clue is a double definition.

'badger' is the first definition.
(both can mean to annoy or complain at)

'horse?' is the second definition.
(term for an old horse)

'or' is the link.

(Other definitions for nag that I've seen before include "Find fault" , "Old or over-worked horse" , "Ailing horse" , "Badger with constant complaints" , "Complain to or badger incessantly" .)

I've seen this clue in the Sydney Morning Herald and The Times.
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