Wife dips into cashbox to get woven fabric (5)
I believe the answer is:
twill
'woven fabric' is the definition.
(I've seen this before)
'wife dips into cashbox' is the wordplay.
'wife' becomes 'w'.
'dips into' indicates putting letters inside.
'cashbox' becomes 'till' ('till' can be a synonym of 'cashbox').
'w' going into 'till' is 'TWILL'.
'to get' acts as a link.
(Other definitions for twill that I've seen before include "Strong woven fabric" , "Diagonal-weave fabric" , "Ribbed cloth" , "Fabric woven to have diagonal ribs" , "Fabric woven to produce a surface of diagonal parallel ridges" .)