A fabric just as you like (2,4)
I believe the answer is:
at will
'just as you like' is the definition.
I can't judge whether this definition defines the answer.
'a fabric' is the wordplay.
'fabric' becomes 'twill' (type of fabric).
'a'+'twill'='AT WILL'
Can you help me to learn more?
(Other definitions for at will that I've seen before include "According to one's own inclination" , "Whenever one wishes" , "Whenever one pleases, say fire rifle" , "Fire .. .... - whenever you're ready" , "Whenever one pleases, own choice" .)