Refrain from having key cut (6)
I believe the answer is:
eschew
'refrain from' is the definition.
(thesaurus)
'key cut' is the wordplay.
'key' becomes 'esc' ('Escape' key on a computer keyboard).
'cut' becomes 'hew' (I've seen this before).
'esc'+'hew'='ESCHEW'
'having' is the link.
(Other definitions for eschew that I've seen before include "Deliberately avoid" , "'Avoid, keep away from (6)'" , "Deliberately stay away from" , "'Avoid, shun (6)'" , "'Avoid, stay away from (6)'" .)