Learn to cut bread (4)
I believe the answer is:
read
'learn' is the definition.
(synonyms)
'cut bread' is the wordplay.
'cut' means to remove the last letter.
'bread' becomes 'ready' (I've seen this before).
'ready' with its last letter taken off is 'READ'.
'to' is the link.
(Other definitions for read that I've seen before include "Run one's eye over" , "register" , "Check, emend (proof)" , "Interpret (text)" , "examined" .)