Crossword Genius

Don't declare weapon (5)

Ross

I believe the answer is:

baton

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But I can't explain it at all! Could you help me understand?

(Other definitions for baton that I've seen before include "Short rod (that can be passed!)" , "Piece of equipment" , "Conductor wields it - or a policeman" , "A stick for a conductor and policeman" , "Short stick" .)

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