Shock-absorber containing more moisture (6)
I believe the answer is:
damper
'shock-absorber containing more' is the definition.
I can't judge whether this defines the answer.
'moisture' is the wordplay.
I cannot really see how this works, but
'moisture' could be 'damp' (I've seen this before) and 'damp' is located in the answer.
The remaining letters 'er' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for damper that I've seen before include "Control of stove - wet blanket" , "Control for fire - party-pooper" , "Negative influence - more moist" , "Vibration reducer" , "more soppy" .)