Reduce size of quiet skating venue (6)
I believe the answer is:
shrink
'reduce size' is the definition.
'shrink' can be an answer for 'reduce' (synonyms). I'm not certain of the 'size' bit.
'quiet skating venue' is the wordplay.
'quiet' becomes 'sh' ('sh' is used to tell someone to be quiet).
'skating venue' becomes 'rink' (I've seen this in another clue).
'sh'+'rink'='SHRINK'
'of' acts as a link.
Can you help me to learn more?
(Other definitions for shrink that I've seen before include "decline" , "Become smaller like slang psychiatrist" , "Reduce in size" , "Grow smaller like slangy psychiatrist" , "Contract, reduce" .)