A line you can credit with no difficulty (6)

I believe the answer is:
crease
'a line' is the definition.
('crease' can be a synonym of 'line')
'credit with no difficulty' is the wordplay.
'credit' becomes 'cr' (abbreviation).
'with no difficulty' becomes 'ease' (I've seen this in other clues).
'cr'+'ease'='CREASE'
'you can' acts as a link.
This may not be right. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for crease that I've seen before include "Furrow, wrinkle" , "Wrinkle or pressed line" , "Mark on cricket pitch" , "Fold in clothing" , "Wrinkle on the cricket pitch?" .)
