Shrink from the act of touching physically, right through (8)
I believe the answer is:
contract
'shrink' is the definition.
(synonyms)
'act of touching physically right through' is the wordplay.
I cannot really see how this works, but
'of' could be 'o' and 'o' is present in the answer.
'right' could be 'r' (common abbreviation) and 'r' is found in the answer.
an anagram of 'act' is 'tac' which is within the left over letters.
This may be the basis of the clue (or it may be nonsense).
'from the' acts as a link.
Can you help me to learn more?
(Other definitions for contract that I've seen before include "Agree - reduce" , "Come down with" , "Become smaller" , "Arrangement to commit murder" , "Make smaller" .)