Secret communications attachment for a rock climber (9)
I believe the answer is:
scrambler
This clue might be a double definition.
'secret communications attachment' is the first definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe there's an association between them I don't understand?
'rock climber' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'for a' is the link.
Can you help me to learn more?
(Other definitions for scrambler that I've seen before include "plant" , "One hurrying to take off" , "Biker" , "Phone security device" , "muddler?" .)