Receiving signal, criminal stamped in frustration (14)
I believe the answer is:
disappointment
'frustration' is the definition.
(I've seen this before)
'receiving signal criminal stamped' is the wordplay.
I cannot quite understand how this works, but
'signal' could be 'point' (point is a kind of signal) and 'point' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
'in' acts as a link.
Can you help me to learn more?
(Other definitions for disappointment that I've seen before include "Let-down" , "unhappiness" , "Setback" , "Frustrating thing" , "Frustration" .)