Crossword Genius

Arm muscles (6)

Ross

I believe the answer is:

biceps

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

This is the entire clue.

(Other definitions for biceps that I've seen before include "Weightlifters use them" , "Contractor" , "Arm muscles" , "Large upper arm muscle" , "One operating arm" .)

I've seen this clue in The Telegraph.
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