Point of fork catching wife’s thread (5)
I believe the answer is:
twine
'thread' is the definition.
(I've seen this in another clue)
'point of fork catching wife's' is the wordplay.
'point of fork' becomes 'tine' (I am not sure about this - if you are sure you should believe this answer much more).
'catching' is an insertion indicator.
'wife' becomes 'w' (abbreviation).
'tine' enclosing 'w' is 'TWINE'.
Can you help me to learn more?
(Other definitions for twine that I've seen before include "Stout string" , "Tough string" , "Coil" , "weaving" , "Interweave" .)