Pat leaves part-time type of joint when cornered? (5)
I believe the answer is:
Here is my best explanation:
'joint when cornered?' is the definition.
I can't tell whether this defines the answer.
'pat leaves part-time type' is the wordplay.
'leaves' indicates named letters should be taken away.
'type' indicates an anagram.
'parttime' with 'pat' removed is 'rtime'.
'rtime' is an anagram of 'MITRE'.
'of' is the link.
(Other definitions for mitre that I've seen before include "A bishop's headgear", "item", "Type of joint - bishop's hat", "A bishop's tall hat", "Merit (anag.)", "symbol of ecclesiastical authority", "Kind of joint", "Joint - bishop's hat", "What a bishop may have on" and "Item of headgear".)