Guarded bait off Danube’s banks (3)
I believe the answer is:
coy
'guarded' is the definition.
Both the answer and definition are adjectives. Maybe you can see a link between them that I don't see?
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for coy that I've seen before include "Affectedly modest or shy" , "Pretending to be shy or bashful" , "Pretending modesty" , "Group of soldiers" , "Reserved" .)