Investigation puts pressure on awful bore (5)
I believe the answer is:
Here is my best explanation:
'investigation' is the definition.
(probe is a kind of investigation)
'pressure on awful bore' is the subsidiary indication.
'pressure' becomes 'p' (abbreviation).
'on' says to put letters next to each other.
'awful' indicates an anagram.
'bore' is an anagram of 'robe'.
'puts' is the link.
(Other definitions for probe that I've seen before include "Closely enquire into", "Question or examine closely", "Poke into", "Examine searchingly", "Investigation", "Explore, examine", "Question or examine thoroughly", "(Crime) investigation", "Investigate closely" and "Intrusive device".)